| US Route 44 RTE 1 over Still River | Poor | 136.2 ft | 18,500 | 1949 |
| Route 8 Northbound over Branch Brook | Poor | 271.7 ft | 16,800 | 1964 |
| Grove Street over Housatonic River | Poor | 345.5 ft | 7,900 | 1977 |
| East Albert Street over Naugatuck River | Poor | 156.5 ft | 7,800 | 1959 |
| US Route 44 over Wachocastinook Creek | Poor | 41.0 ft | 7,400 | 1951 |
| Church Street over W Br Naugatuck River | Poor | 111.2 ft | 5,350 | 1956 |
| US Route 202 over Shepaug River | Poor | 186.0 ft | 4,800 | 1957 |
| Boardman Road over Housatonic River | Poor | 234.6 ft | 3,700 | 1984 |
| Meadow Street over Mad River | Poor | 73.2 ft | 3,010 | 1956 |
| Wellers Bridge RD over Shepaug River | Poor | 147.0 ft | 3,000 | 1955 |
| Franklin Street over E Br Naugatuck River | Poor | 66.9 ft | 2,840 | 1958 |
| Wall Street over E Branch Naugatuck River | Poor | 70.5 ft | 2,780 | 1961 |
| Route 4 over Guinea Brook | Poor | 27.9 ft | 2,200 | 1933 |
| Wallens Street over Still River | Poor | 74.8 ft | 1,860 | 1955 |
| Newfield Road over E Br Naugatuck River | Poor | 66.6 ft | 1,850 | 1957 |
| Van Car Road over East Aspetuck River | Poor | 53.1 ft | 908 | 1957 |
| Wheaton Road over East Aspetuck River | Poor | 35.1 ft | 908 | 1985 |
| Route 263 over E Branch Naugatuck River | Poor | 28.9 ft | 700 | 1935 |
| 24 Bumper Road over Route 8 | Poor | 407.8 ft | 680 | 1966 |
| Merryall Road over West Aspetuck River | Poor | 35.1 ft | 655 | 1937 |
| Squire Hill Road over West Aspetuck River | Poor | 49.9 ft | 625 | 1956 |
| Sand Road over West Aspetuck River | Poor | 32.2 ft | 516 | 1983 |
| White Street over Still River | Poor | 133.9 ft | 410 | 1956 |
| Cobble Road over Hollenbeck River | Poor | 115.2 ft | 378 | 1956 |
| Locust Road over Rock Brook | Poor | 28.9 ft | 319 | 1967 |
| Bridge Street over Mad River | Poor | 77.1 ft | 310 | 1956 |
| Mountain Road over Spaulding Brook | Poor | 21.7 ft | 209 | 1955 |
| West Morris Road over Bantam River | Poor | 94.2 ft | 200 | 1956 |
| Grantville Road over Mad River | Poor | 34.1 ft | 135 | 1956 |
| South Road over Still River | Poor | 20.7 ft | 106 | 1984 |
| River Place over Blackberry River | Poor | 46.9 ft | 100 | 1957 |
| Falls Road over Nonnewaug Brook | Poor | 30.8 ft | 95 | 1956 |
| Smith Road over Hall Meadow Brook | Poor | 22.0 ft | 77 | 1999 |
| Old Goshen Road over Hall Meadow Brook | Poor | 20.0 ft | 52 | 1956 |
| Maddox Road #1 over East Spring Brook | Poor | 37.1 ft | 20 | 1956 |
| Interstate-95 over Richards Avenue | Fair | 58.4 ft | 115,900 | 1956 |
| US 202 & Route 67 over Housatonic River | Fair | 332.0 ft | 23,800 | 1953 |
| Route 8 Northbound over Laurel Hill Road | Fair | 71.9 ft | 22,000 | 1966 |
| Route 8 Northbound over Reynolds Bridge Road | Fair | 60.7 ft | 16,800 | 1964 |
| U.s. Route 6 over Pequabuck River | Fair | 26.9 ft | 16,600 | 1935 |
| U.s. Route 6 over Pequabuck River | Fair | 24.0 ft | 16,600 | 1986 |
| Route 8 Southbound over Branch Brook | Fair | 271.7 ft | 16,200 | 1964 |
| US Route 44 over Route 8 Northbound | Fair | 119.1 ft | 16,000 | 1970 |
| U.s. Route 202 over E Branch Naugatuck River | Fair | 55.1 ft | 15,900 | 1957 |
| U.s. Route 6 over Pequabuck River | Fair | 50.9 ft | 15,700 | 1957 |
| Fitch Hill Road over Interstate-395 | Fair | 182.1 ft | 15,500 | 1958 |
| Route 8 Northbound over Route 262 | Fair | 170.9 ft | 15,100 | 1964 |
| Route 8 Northbound over Echo Lake Road | Fair | 126.0 ft | 15,100 | 1964 |
| Route 8 Southbound over Route 262 | Fair | 180.1 ft | 14,100 | 1964 |
| Route 8 Southbound over Echo Lake Road | Fair | 134.8 ft | 14,100 | 1964 |
| Route 73 over Steele Brook | Fair | 125.0 ft | 14,100 | 1994 |
| Route 8 Northbound over Naugatuck River & R.r. | Fair | 556.8 ft | 14,000 | 1966 |
| Route 8 Southbound over Naugatuck River & R.r. | Fair | 591.9 ft | 14,000 | 1966 |
| U.s. Route 44 over Morgan Brook | Fair | 26.9 ft | 13,900 | 1947 |
| Route 8 Northbound over Kennedy Drive | Fair | 159.1 ft | 13,700 | 1967 |
| US Route 202 over Bakersville Brook | Fair | 24.0 ft | 13,500 | 1959 |
| Route 4 over Leadmine Brook | Fair | 39.0 ft | 13,100 | 1927 |
| US Route 202 over W Branch Naugatuck Rv | Fair | 107.0 ft | 13,000 | 1958 |
| Route 8 Northbound over Naugatuck River & Rr | Fair | 701.1 ft | 12,600 | 1960 |
| Route 8 Northbound over Bogue Road | Fair | 130.9 ft | 12,300 | 1966 |
| Route 8 Northbound over Harwinton Avenue | Fair | 73.2 ft | 12,300 | 1966 |
| Route 8 Northbound over Hill Street | Fair | 92.8 ft | 12,300 | 1966 |
| Route 8 Northbound over Fenn Road | Fair | 123.0 ft | 12,200 | 1960 |
| Route 8 Northbound over U. S. Route 6 Eastbound | Fair | 101.0 ft | 12,000 | 1966 |
| Route 8 Southbound over Naugatuck River & Rr | Fair | 623.0 ft | 11,900 | 1960 |
| Route 8 Northbound over Route 254 -waterbury RD | Fair | 152.6 ft | 11,900 | 1966 |
| Route 8 Northbound over Campville Road | Fair | 179.8 ft | 11,800 | 1960 |
| Route 8 Northbound over Naugatuck Railroad Co. | Fair | 239.8 ft | 11,800 | 1966 |
| Route 8 Northbound over Naugatuck River & Access | Fair | 342.5 ft | 11,800 | 1966 |
| Route 8 Northbound over Route 222 -north Main ST | Fair | 112.9 ft | 11,800 | 1966 |
| Route 8 Southbound over Hill Street | Fair | 92.8 ft | 11,600 | 1966 |
| Route 8 Southbound over Fenn Road | Fair | 121.1 ft | 11,500 | 1960 |
| Route 8 Southbound over Bogue Road | Fair | 134.8 ft | 11,500 | 1966 |
| Route 8 Southbound over Route 254 - Waterbury RD | Fair | 136.2 ft | 11,200 | 1966 |
| Route 8 Southbound over U.s. Route 6 Eastbound | Fair | 101.0 ft | 11,200 | 1966 |
| Route 8 Southbound over Campville Road | Fair | 179.8 ft | 11,000 | 1960 |
| U.s. Route 202 over Nepaug River | Fair | 70.9 ft | 10,800 | 1923 |
| US Route 44 over Spruce Brook | Fair | 34.4 ft | 10,700 | 1941 |
| Route 8 Southbound over Naugatuck Railroad Co. | Fair | 253.0 ft | 10,700 | 1966 |
| Route 8 Southbound over Naugatuck River & Access | Fair | 342.8 ft | 10,700 | 1966 |
| Route 8 Southbound over Route 222 -north Main ST | Fair | 115.2 ft | 10,700 | 1966 |
| SR 807 over Northfield Brook | Fair | 36.1 ft | 10,400 | 1956 |
| Route 4 over East Branch Naugatuck Rv | Fair | 55.1 ft | 10,400 | 1989 |
| US Route 44 over Farmington River | Fair | 340.6 ft | 10,200 | 1958 |
| US Route 202 over Nepaug River | Fair | 87.9 ft | 10,000 | 2008 |
| US Route 202 over Nepaug River | Fair | 47.9 ft | 10,000 | 1989 |
| Route 8 Southbound over Harwinton Avenue | Fair | 69.9 ft | 9,700 | 1966 |
| Route 8 Southbound over Laurel Hill Road | Fair | 71.9 ft | 9,700 | 1966 |
| Route 8 Northbound over Winthrop Street | Fair | 63.0 ft | 9,400 | 1964 |
| Route 8 Northbound over Graham Village Road | Fair | 57.1 ft | 9,400 | 1964 |
| US Route 202 over East Aspetuck River | Fair | 37.1 ft | 9,300 | 1931 |
| Route 8 Northbound over Route 222 - East Main ST | Fair | 91.9 ft | 9,300 | 1966 |
| Route 118 over Route 8 | Fair | 260.5 ft | 9,000 | 1966 |
| Route 8 Southbound over Winthrop Street | Fair | 60.0 ft | 8,800 | 1964 |
| Route 8 Southbound over Graham Village Road | Fair | 57.1 ft | 8,800 | 1964 |
| Route 8 Southbound over Route 222 - East Main ST | Fair | 99.1 ft | 8,800 | 1966 |
| U.s. Route 6 over Nonewaug River | Fair | 67.9 ft | 8,700 | 1928 |
| Route 4 over W. Branch Leadmine Brook | Fair | 40.0 ft | 8,500 | 1959 |
| U.s. Route 6 over Steele Brook | Fair | 36.1 ft | 8,500 | 1957 |
| U.s. Route 6 over Branch Brook | Fair | 65.0 ft | 8,300 | 1939 |
| Route 222 over Naugatuck River Overflow | Fair | 138.5 ft | 8,300 | 1958 |
| Route 222 over Naug. Rr & Private Road | Fair | 334.6 ft | 8,300 | 1939 |
| Route 222 over Naugatuck River | Fair | 124.7 ft | 7,900 | 1930 |
| Still River Drive over Still River | Fair | 181.1 ft | 7,600 | 1993 |
| Route 64 over Old Sherman Hill Road | Fair | 39.0 ft | 7,400 | 1931 |
| US Route 202 over Gulf Stream | Fair | 29.9 ft | 7,400 | 1957 |
| U.s. Route 202 over East Aspetuck River | Fair | 32.2 ft | 7,300 | 1931 |
| Route 8 Southbound over Kennedy Drive | Fair | 159.1 ft | 7,300 | 1967 |
| US Route 202 over Butternut Brook | Fair | 54.1 ft | 7,200 | 1988 |
| US Route 202 over East Aspetuck River | Fair | 25.9 ft | 6,600 | 1933 |
| Route 181 over W Br Farmington River | Fair | 238.8 ft | 6,600 | 1939 |
| Route 8 Northbound over Route 202 (east Main St) | Fair | 96.1 ft | 6,500 | 1964 |
| Route 8 Northbound over Route 4 (east Elm St.) | Fair | 85.6 ft | 6,500 | 1964 |
| Route 318 over Beaver Brook | Fair | 20.0 ft | 6,300 | 1937 |
| US Route 44 & RTE over Indian Meadow Brook | Fair | 47.9 ft | 6,200 | 1940 |
| Route 8 Southbound over Route 202 (east Main St) | Fair | 96.1 ft | 6,000 | 1964 |
| Route 8 Southbound over Route 4 (east Elm St.) | Fair | 84.0 ft | 6,000 | 1964 |
| Route 317 over Pomperaug River | Fair | 201.1 ft | 6,000 | 1989 |
| Route 118 over Naugatuck River | Fair | 234.3 ft | 5,900 | 1959 |
| SR 800 over Gulf Stream | Fair | 23.0 ft | 5,900 | 1962 |
| Route 8 Southbound over Pinewoods Road | Fair | 128.9 ft | 5,800 | 1967 |
| Route 67 over Town Farm Brook | Fair | 24.0 ft | 5,600 | 1946 |
| Route 262 over Naugatuck River | Fair | 125.3 ft | 5,600 | 1988 |
| Route 118 over Bantam River | Fair | 58.4 ft | 5,500 | 1960 |
| Route 8 Northbound over Pinewoods Road | Fair | 128.9 ft | 5,500 | 1967 |
| U.s. Route 202 over East Aspetuck River | Fair | 32.2 ft | 5,400 | 1931 |
| US Route 44 over Whiting River | Fair | 48.9 ft | 5,400 | 1949 |
| Route 318 over Morgan Brook | Fair | 27.9 ft | 5,400 | 1947 |
| U.s. Route 44 over Wood Creek | Fair | 30.2 ft | 5,400 | 1927 |
| Route 318 over Saville Dam Spillway | Fair | 34.4 ft | 5,300 | 1940 |
| US Route 44 over Mill Brook | Fair | 36.1 ft | 5,200 | 1934 |
| French Street over Steele Brook | Fair | 37.1 ft | 5,199 | 1983 |
| Farley Place over E Branch Naugatuck River | Fair | 36.1 ft | 5,150 | 1975 |
| US Route 202 over Gulf Stream | Fair | 34.1 ft | 4,900 | 1957 |
| East Pearl Street over E Branch Naugatuck River | Fair | 66.9 ft | 4,900 | 1988 |
| U.s. Route 6 over Nonewaug River | Fair | 86.3 ft | 4,500 | 1957 |
| US Route 44 over Spruce Swamp Creek | Fair | 32.2 ft | 4,300 | 1928 |
| Route 317 over Hesseky Brook | Fair | 38.4 ft | 4,300 | 1957 |
| Route 47 over Nonewaug River | Fair | 73.2 ft | 4,200 | 1956 |
| Route 47 over Shepaug River | Fair | 76.1 ft | 4,200 | 1950 |
| Wellsville Avenue over East Aspetuck River | Fair | 59.1 ft | 4,179 | 1937 |
| Route 118 over Spruce Brook | Fair | 26.9 ft | 4,000 | 1960 |
| Elm Street Ext. over Great Brook | Fair | 24.0 ft | 3,973 | 1996 |
| Route 67 over Second Hill Brook | Fair | 27.9 ft | 3,900 | 1958 |
| Route 118 over Naugatuck Railroad | Fair | 135.8 ft | 3,900 | 1963 |
| US Route 7 & RTE 4 over Housatonic Rv Rr Locl RD | Fair | 673.6 ft | 3,800 | 1930 |
| Route 219 over Farmington River | Fair | 239.5 ft | 3,700 | 1959 |
| Meadow Street over Highland Lake Outlet | Fair | 27.9 ft | 3,420 | 1940 |
| US Route 7 over Housatonic Railroad | Fair | 140.1 ft | 3,400 | 1931 |
| Route 63 over Bantam River | Fair | 54.8 ft | 3,400 | 1942 |
| Route 8 over Brook | Fair | 28.5 ft | 3,400 | 1988 |
| Route 112 over Salmon Creek | Fair | 148.3 ft | 3,300 | 1958 |
| Route 47 over Shepaug River | Fair | 167.0 ft | 3,200 | 1958 |
| Route 72 over Poland River | Fair | 39.0 ft | 3,200 | 1940 |
| Housatonic Avenue over Aspetuck River | Fair | 67.9 ft | 3,200 | 1956 |
| Franklin Drive over E Branch Naugatuck River | Fair | 79.4 ft | 3,180 | 1961 |
| Route 20 over Still River | Fair | 53.1 ft | 3,100 | 1935 |
| Prospect Street over W Branch Naugatuck River | Fair | 86.9 ft | 3,090 | 1912 |
| Route 47 over Weekeepeemee River | Fair | 76.1 ft | 3,000 | 1928 |
| US Route 7 over Cl&p Penstocks | Fair | 43.6 ft | 2,900 | 2008 |
| Route 63 over Hollenbeck River | Fair | 24.0 ft | 2,900 | 1950 |
| North Main Street over Poland River | Fair | 41.7 ft | 2,809 | 2017 |
| Route 112 over Salmon Creek | Fair | 43.0 ft | 2,800 | 1930 |
| Route 4 over Baldwin Brook | Fair | 24.0 ft | 2,800 | 1996 |
| Wall Street over E Branch Naugatuck River | Fair | 56.1 ft | 2,780 | 1961 |
| Route 63 over West Br. Bantam River | Fair | 35.1 ft | 2,700 | 1961 |
| Route 72 over Poland River | Fair | 29.9 ft | 2,700 | 1927 |
| Route 263 over Mad River | Fair | 78.1 ft | 2,600 | 1957 |
| SR 848 (waterbury over Naugatuck River & Rr | Fair | 487.5 ft | 2,500 | 1928 |
| Route 272 over Nickel Mine Brook | Fair | 26.9 ft | 2,500 | 1921 |
| Greenwoods Road over Route 8 | Fair | 257.9 ft | 2,500 | 1969 |
| Greystone Road #1 over Pan Am Railroad | Fair | 161.4 ft | 2,500 | 1960 |
| US Route 7 over Hollenbeck River | Fair | 42.0 ft | 2,500 | 1988 |
| Route 209 over Bantam River | Fair | 44.0 ft | 2,400 | 1935 |
| Forest Street over Abandoned Dot Railroad | Fair | 40.0 ft | 2,387 | 1915 |
| Route 4 over Guinea Brook | Fair | 26.9 ft | 2,300 | 1934 |
| US Route 7 over Bulls Canal | Fair | 66.3 ft | 2,300 | 1930 |
| Route 47 over Sprain Brook | Fair | 62.0 ft | 2,300 | 1956 |
| Route 109 over Mallory Brook | Fair | 28.9 ft | 2,300 | 1996 |
| Route 263 over Highland Lake Outlet | Fair | 36.1 ft | 2,200 | 1957 |
| U.s. Route 7 over Gunn Brook | Fair | 26.9 ft | 2,100 | 1924 |
| Route 63 over Hollenbeck River | Fair | 46.9 ft | 2,100 | 1928 |
| Case Avenue over Mad River | Fair | 76.4 ft | 2,030 | 1956 |
| Route 20 over Still River | Fair | 163.1 ft | 2,000 | 1953 |
| Route 72 over Poland River | Fair | 37.1 ft | 2,000 | 1927 |
| Route 219 over E Br Farmington River | Fair | 126.0 ft | 2,000 | 1929 |
| Route 272 over W.branch Naugatuck River | Fair | 97.1 ft | 2,000 | 1954 |
| Route 72 over Poland River | Fair | 24.0 ft | 2,000 | 1927 |
| Route 199 over Battle Swamp Brook | Fair | 24.9 ft | 2,000 | 1989 |
| Route 341 over Housatonic River | Fair | 259.8 ft | 2,000 | 1991 |
| Wolcott Avenue over W Branch Naugatuck River | Fair | 117.5 ft | 1,930 | 1961 |
| Route 47 over Bee Brook | Fair | 35.1 ft | 1,900 | 1959 |
| Route 47 over Bee Brook | Fair | 37.1 ft | 1,900 | 1959 |
| Route 181 over Morgan Brook | Fair | 39.0 ft | 1,900 | 1957 |
| Route 47 over Sprain Brook | Fair | 60.0 ft | 1,900 | 1989 |
| King Hill Road over Indian Pond Creek | Fair | 25.9 ft | 1,829 | 1986 |
| Route 20 over W Brnch Farmington River | Fair | 144.0 ft | 1,700 | 1940 |
| Route 47 over Bee Brook | Fair | 36.1 ft | 1,700 | 1959 |
| Route 132 over Weekeepeemee River | Fair | 50.9 ft | 1,700 | 1934 |
| Cedar Lane over Bakersville Brook | Fair | 38.1 ft | 1,650 | 1999 |
| Preston Road over Poland River | Fair | 32.2 ft | 1,648 | 1996 |
| Greystone Road #1 over Greystone Pond | Fair | 57.1 ft | 1,581 | 1964 |
| Route 126 over Flat Brook | Fair | 27.9 ft | 1,500 | 1965 |
| Route 341 over Housatonic Railroad | Fair | 32.2 ft | 1,500 | 1901 |
| Division Street over Mad River | Fair | 78.1 ft | 1,364 | 1956 |
| Route 41 over Sages Ravine Brook | Fair | 34.8 ft | 1,300 | 1929 |
| Route 272 over W Br Naugatuck River | Fair | 76.1 ft | 1,300 | 1957 |
| Route 272 over Spillway | Fair | 76.1 ft | 1,300 | 1961 |
| Route 272 over Hall Meadow Brook | Fair | 110.2 ft | 1,300 | 1961 |
| New Street over Route 8 | Fair | 265.1 ft | 1,270 | 1969 |
| Aspetuck Ridge RD over West Aspetuck River | Fair | 40.0 ft | 1,254 | 1990 |
| Papermill Road over East Aspetuck River | Fair | 32.2 ft | 1,248 | 1989 |
| Wells Road over East Aspetuck River | Fair | 40.0 ft | 1,226 | 1992 |
| Route 361 over Mudge Pond Brook | Fair | 42.3 ft | 1,200 | 1957 |
| Route 132 over Weekeepeemee River | Fair | 28.9 ft | 1,200 | 1941 |
| Route 67 over Shepaug River | Fair | 117.1 ft | 1,200 | 1990 |
| Route 128 over Housatonic River | Fair | 172.6 ft | 1,100 | 1841 |
| Route 183 over Sandy Brook | Fair | 65.0 ft | 1,100 | 1958 |
| Route 128 over Mill Brook | Fair | 29.9 ft | 1,100 | 1924 |
| Route 272 over Hall Meadow Brook | Fair | 34.1 ft | 1,100 | 1988 |
| South Eagle Road over Pan Am Railroad | Fair | 45.3 ft | 1,100 | 1991 |
| New Street over Still River | Fair | 34.1 ft | 1,080 | 1970 |
| East West Hill RD over Morgan Brook | Fair | 28.9 ft | 1,045 | 1930 |
| Route 222 over Naugatuck River | Fair | 136.2 ft | 1,000 | 1960 |
| Route 222 over Leadmine Brook | Fair | 352.0 ft | 1,000 | 1960 |
| River Road over Canoe Brook | Fair | 28.9 ft | 951 | 1956 |
| Route 222 over Naugatuck Railroad Co. | Fair | 42.3 ft | 900 | 1960 |
| Route 272 over Hall Meadow Brook | Fair | 24.0 ft | 900 | 1998 |
| South Street over Little Jacks Brook | Fair | 24.9 ft | 898 | 1930 |
| Route 181 over Beaver Brook | Fair | 30.8 ft | 850 | 1929 |
| Munro Street over Mad River | Fair | 77.1 ft | 840 | 1956 |
| Minortown RD Conn over Nonewaug River | Fair | 64.0 ft | 836 | 1969 |
| Minor Bridge Road over Shepaug River | Fair | 134.8 ft | 800 | 1962 |
| Lovers Lane over Lovers Lane Brook | Fair | 20.0 ft | 780 | 1935 |
| Erickson Road over Housatonic Railroad | Fair | 116.1 ft | 775 | 1992 |
| Jacks Bridge Road over Weekeepeemee River | Fair | 64.0 ft | 772 | 1969 |
| Judson Avenue over Pomperaug River | Fair | 76.1 ft | 765 | 1969 |
| Wahnee Road over E Branch Naugatuck River | Fair | 28.9 ft | 700 | 1987 |
| Old Pumpkin Hill R over Housatonic Railroad | Fair | 102.7 ft | 685 | 1991 |
| Sandy Brook Road over Sandy Brook | Fair | 83.0 ft | 673 | 1948 |
| Sharon Valley RD over Indian Pond Creek | Fair | 24.9 ft | 670 | 1984 |
| Judd Road over Poland River | Fair | 26.9 ft | 663 | 1955 |
| Morgan Brook Road over Morgan Brook | Fair | 61.0 ft | 660 | 1957 |
| Stillwater Pond RD over W Branch Naugatuck River | Fair | 81.7 ft | 655 | 1960 |
| Lower Road over Blackberry River | Fair | 79.1 ft | 628 | 1938 |
| West Hyerdale DR over Marshepaug River | Fair | 60.0 ft | 627 | 1970 |
| Chapel Hill Road over West Aspetuck River | Fair | 25.9 ft | 625 | 1975 |
| Ssr 478 over East Aspetuck River | Fair | 35.1 ft | 600 | 1988 |
| East Street South over Bantam River | Fair | 52.2 ft | 585 | 1956 |
| Maple Hollow Road over Nepaug River | Fair | 59.1 ft | 560 | 1955 |
| SR 832 over Housatonic Railroad | Fair | 278.5 ft | 550 | 1938 |
| Newfield Road over E Branch Naugatuck River | Fair | 30.8 ft | 535 | 1935 |
| Marsh Road over Bristol Reservoir Spl | Fair | 65.0 ft | 523 | 1940 |
| Belleview Avenue over Gulf Stream | Fair | 27.9 ft | 520 | 1910 |
| West Morris Road over Bantam River | Fair | 26.9 ft | 515 | 1940 |
| Bulls Bridge Road over Spooner Dam Overflow | Fair | 61.0 ft | 506 | 1991 |
| Ssr 485 over Nickel Mine Brook | Fair | 32.2 ft | 500 | 1957 |
| Gallivan Lane over Interstate-395 | Fair | 182.4 ft | 498 | 1958 |
| College Hill Road over Whiting River | Fair | 55.1 ft | 448 | 1999 |
| South Road over Rock Brook | Fair | 41.0 ft | 446 | 1985 |
| Winchester Road over Bakersville Brook | Fair | 32.2 ft | 410 | 1955 |
| Farnum Road over Salmon Creek | Fair | 65.6 ft | 408 | 2001 |
| Sodom Road over Konkapot River | Fair | 67.9 ft | 408 | 1956 |
| Bulls Bridge Road over Housatonic River | Fair | 109.3 ft | 400 | 1842 |
| River Road over Guinea Brook | Fair | 28.9 ft | 400 | 1986 |
| Route 43 over Bradford Brook | Fair | 23.0 ft | 400 | 1989 |
| Beech Hill Road over Sandy Brook | Fair | 43.0 ft | 397 | 2000 |
| South Road over Leadmine Brook | Fair | 66.9 ft | 390 | 1999 |
| Pothier Road over Nickel Mine Brook | Fair | 28.9 ft | 390 | 1910 |
| Sucker Brook Road over Sucker Brook Spillway | Fair | 91.9 ft | 380 | 1966 |
| Romford Road over Bantam River | Fair | 71.9 ft | 380 | 1910 |
| Old Creamery Road over Still River | Fair | 46.3 ft | 338 | 1930 |
| Mill Road over Nonewaug River | Fair | 64.0 ft | 318 | 1900 |
| Macedonia Brook RD over Macedonia Brook | Fair | 44.0 ft | 318 | 1948 |
| Park Avenue over Gulf Stream | Fair | 41.0 ft | 290 | 1960 |
| Steele Road over Nepaug River | Fair | 109.9 ft | 280 | 1955 |
| Steele Road over Brook | Fair | 28.9 ft | 270 | 1957 |
| Day Road over Beaver Brook | Fair | 46.9 ft | 270 | 1956 |
| River Road over Mill Brook | Fair | 25.9 ft | 265 | 1987 |
| Wewaka Brook Road over Wewaka Brook | Fair | 24.6 ft | 265 | 1933 |
| Findley Road over East Aspetuck River | Fair | 46.9 ft | 250 | 1956 |
| Under Mountain Roa over Wangum Lake Brook | Fair | 37.1 ft | 238 | 1956 |
| Pomperaug Road over Pomperaug River | Fair | 116.5 ft | 216 | 1956 |
| Wilton Road over Wilton Pond | Fair | 43.0 ft | 206 | 1998 |
| Pie Hill Road over Bantam River | Fair | 22.0 ft | 196 | 1950 |
| Valley Road over Birdseye Brook | Fair | 27.9 ft | 189 | 1987 |
| Rugg Brook Road over Mad River | Fair | 52.2 ft | 140 | 1956 |
| Hemlock Road over Clapboard Oak Brook | Fair | 22.0 ft | 136 | 1950 |
| Church Street over East Aspetuck River | Fair | 24.9 ft | 135 | 1986 |
| Wolfords Hill Road over Sandy Brook | Fair | 42.0 ft | 133 | 2005 |
| Judds Bridge Road over Lenevig Brook | Fair | 22.0 ft | 129 | 1956 |
| Chohees Trail over Weekeepeemee River | Fair | 65.0 ft | 126 | 1969 |
| Canaan Mountain RD over Wangum Lake Brook | Fair | 30.8 ft | 125 | 1988 |
| Mcclave Road over North Brook | Fair | 24.9 ft | 122 | 2002 |
| Black Bridge Road over W Br Farmington River | Fair | 173.9 ft | 120 | 1999 |
| Bunnell Street over Loon Brook | Fair | 34.1 ft | 110 | 2010 |
| Campbell Road over Sandy Brook | Fair | 57.1 ft | 100 | 2015 |
| Swimming Hole RD over Leadmine Brook | Fair | 34.1 ft | 85 | 1989 |
| Old Forge Road over Sandy Brook | Fair | 81.0 ft | 80 | 1996 |
| Riga Lane over Wachocastinook Brook | Fair | 37.1 ft | 80 | 1957 |
| Sand Pit Road over East Aspetuck River | Fair | 45.9 ft | 78 | 1957 |
| Cemetery Road over Sucker Brook | Fair | 21.0 ft | 76 | 1998 |
| Eli Bunker Road over E. Branch Shepaug River | Fair | 29.9 ft | 68 | 1965 |
| State Line Hill RD over Sandy Brook | Fair | 57.1 ft | 67 | 1956 |
| Schoolhouse Road over Center Brook | Fair | 34.1 ft | 66 | 1957 |
| Duck Pond Road over Butternut Brook | Fair | 24.9 ft | 66 | 1992 |
| Niles Road over Cedar Swamp Brook | Fair | 33.1 ft | 65 | 1956 |
| Old RTE 254-lower over Northfield Brook | Fair | 49.9 ft | 60 | 1936 |
| Dugan Road over Kent Falls Brook | Fair | 25.6 ft | 54 | 1954 |
| Minor Road over Leadmine Brook | Fair | 44.6 ft | 50 | 1939 |
| Basin Main Road over Mad River | Fair | 55.4 ft | 42 | 1940 |
| Basin Main Road over Mad River | Fair | 45.3 ft | 42 | 1940 |
| Access Road over Thomaston Spillway Chann | Fair | 114.2 ft | 40 | 1960 |
| Judds Bridge Road over Shepaug River | Fair | 95.1 ft | 34 | 1987 |
| Lower Barrack Road over Flat Brook | Fair | 25.9 ft | 31 | 1956 |
| Walnut Hill RD #2 over Northfield Brook | Fair | 40.0 ft | 30 | 1946 |
| Kirby Brook Road over Kirby Brook | Fair | 35.1 ft | 20 | 1956 |
| West Mountain Road over Sprain Brook | Fair | 27.9 ft | 20 | 1994 |
| Main Park Road over Hall Meadow Brook | Fair | 68.9 ft | 20 | 1970 |
| Interstate-95 over Route 10 | Good | 112.5 ft | 132,600 | 1957 |
| Route 8 Southbound over Reynolds Bridge Road | Good | 61.0 ft | 16,200 | 1964 |
| Scott Road over Interstate-84 | Good | 197.2 ft | 16,100 | 2018 |
| U.s. Route 6 over South Brook | Good | 24.9 ft | 11,700 | 1973 |
| Route 4 over W Branch Naugatuck River | Good | 94.2 ft | 11,000 | 1989 |
| Grove Street over Great Brook | Good | 24.0 ft | 9,100 | 2010 |
| US Route 7 over Rocky River | Good | 44.9 ft | 9,000 | 1988 |
| Route 4 over W Branch Leadmine Brook | Good | 42.3 ft | 8,500 | 1959 |
| SR 800 (main St) over East Branch Naugatuck Rv | Good | 47.9 ft | 8,300 | 1987 |
| US Route 202 over Bantam River | Good | 100.1 ft | 7,700 | 2019 |
| Route 4 over Ivy Mountain Brook | Good | 35.8 ft | 7,100 | 1998 |
| Route 67 over Great Brook | Good | 24.0 ft | 6,700 | 2010 |
| US Route 7 over Morrisey Brook | Good | 86.0 ft | 6,600 | 1989 |
| US Route 7 over Eddys Cove | Good | 20.0 ft | 6,200 | 1989 |
| US Route 7 over Blackberry River | Good | 65.3 ft | 6,000 | 1989 |
| Route 254 over Northfield Brook | Good | 23.0 ft | 5,800 | 1970 |
| Route 254 over Northfield Brook | Good | 30.8 ft | 5,800 | 1970 |
| U.s. Route 6 over East Meadow Brook | Good | 36.1 ft | 5,600 | 2007 |
| Echo Lake Road #1 over Steele Brook | Good | 33.1 ft | 5,600 | 1929 |
| SR 800 over Burr Pond Brook | Good | 22.0 ft | 5,500 | 1996 |
| Sunnyside Avenue over Turkey Brook | Good | 28.9 ft | 4,914 | 2012 |
| Route 254 over Northfield Brook | Good | 20.0 ft | 4,700 | 1964 |
| Route 67 over Jacks Brook | Good | 35.1 ft | 4,700 | 1990 |
| U.s. Route 44 over West Norfolk Brook | Good | 25.9 ft | 4,600 | 2008 |
| US Route 44 over Housatonic River | Good | 228.0 ft | 4,500 | 1990 |
| US Route 44 over Blackberry River | Good | 97.1 ft | 3,900 | 1989 |
| SR 800 over Mad River | Good | 69.2 ft | 3,800 | 2022 |
| Pinewoods Road over Still River | Good | 22.0 ft | 3,737 | 2010 |
| Route 61 over Nonnewaug River | Good | 64.0 ft | 3,700 | 1989 |
| US Route 7 over Housatonic River | Good | 251.0 ft | 3,400 | 1931 |
| Route 72 over Marsh Brook | Good | 32.2 ft | 3,400 | 2015 |
| Nonnewaug Road over East Spring Brook | Good | 24.9 ft | 3,400 | 1988 |
| Route 219 over Nepaug River | Good | 84.0 ft | 3,400 | 1988 |
| Route 8 over Sandy Brook | Good | 112.9 ft | 3,400 | 1988 |
| Route 63 over Hollenbeck River | Good | 66.9 ft | 3,300 | 1960 |
| Route 63 over Hollenbeck River | Good | 80.1 ft | 3,300 | 1960 |
| US Route 7 over Housatonic River | Good | 345.5 ft | 3,200 | 1991 |
| Route 47 over Sprain Brook | Good | 62.0 ft | 3,000 | 1988 |
| Route 4 over Bloody Brook | Good | 25.9 ft | 2,800 | 2014 |
| Canal Street over Pequabuck River | Good | 84.3 ft | 2,700 | 2008 |
| Riverside Street over Steele Brook | Good | 103.0 ft | 2,686 | 1992 |
| Route 109 over Wigwam Reservoir | Good | 103.7 ft | 2,500 | 2019 |
| Route 47 over Sprain Brook | Good | 69.9 ft | 2,300 | 1988 |
| Falls Avenue No. 2 over Turkey Brook | Good | 20.0 ft | 2,200 | 2005 |
| SR 833(clayton Rd) over Konkaput River | Good | 110.9 ft | 2,000 | 1988 |
| Route 47 over Shepaug River | Good | 79.7 ft | 1,900 | 1929 |
| Palmer Bridge ST over Naugatuck River | Good | 157.2 ft | 1,854 | 1961 |
| Route 272 over Norfolk Brook | Good | 26.9 ft | 1,700 | 1972 |
| Merryall Road over West Aspetuck River | Good | 46.9 ft | 1,665 | 2004 |
| Route 63 over Hollenbeck River O/flow | Good | 21.0 ft | 1,600 | 1992 |
| Route 341 over Macedonia Brook | Good | 44.3 ft | 1,500 | 2011 |
| Holabird Avenue over Still River | Good | 93.2 ft | 1,500 | 2018 |
| Route 45 over Sucker Brook | Good | 36.1 ft | 1,500 | 1988 |
| Bemis Street over Pequabuck River | Good | 25.9 ft | 1,442 | 2004 |
| US Route 7 over Carse Brook | Good | 46.9 ft | 1,400 | 1989 |
| Aspetuck Ridge RD over West Aspetuck River | Good | 44.6 ft | 1,323 | 1981 |
| Route 272 over Hart Brook | Good | 37.1 ft | 1,300 | 1958 |
| Route 341 over Bog Hollow Brook | Good | 44.3 ft | 1,300 | 2011 |
| Route 126 over Hollenbeck River | Good | 33.1 ft | 1,200 | 1991 |
| Long Mountain Rd#1 over West Aspetuck River | Good | 63.3 ft | 1,147 | 2002 |
| North Shore Road over Butternut Brook | Good | 52.2 ft | 1,108 | 2016 |
| Camps Flat Road over Bull Mountain Brook | Good | 21.3 ft | 1,060 | 1989 |
| Woolson Street over Steele Brook | Good | 33.1 ft | 1,000 | 1929 |
| West Street over Great Brook | Good | 34.1 ft | 963 | 2002 |
| Bogue Road #1 over Naugatuck River | Good | 156.5 ft | 952 | 1956 |
| Route 272 over Hall Meadow Brook | Good | 50.9 ft | 950 | 1987 |
| SR 827 (south Kent over Housatonic Railroad | Good | 39.0 ft | 900 | 1935 |
| Route 272 over Hall Meadow Brook | Good | 54.1 ft | 900 | 2010 |
| Knife Shop Road over Northfield Pond Brook | Good | 77.1 ft | 800 | 2007 |
| Weed Road over Bantam River | Good | 32.2 ft | 780 | 2007 |
| Old Turnpike North over Konkapot River | Good | 71.9 ft | 760 | 2009 |
| Sharon Station RD over Webatuck Creek | Good | 42.0 ft | 713 | 2000 |
| Cross Road over Still River | Good | 82.0 ft | 676 | 1993 |
| Sandy Brook Road over Sandy Brook | Good | 100.1 ft | 670 | 2023 |
| Sandy Brook Road over Sandy Brook | Good | 120.1 ft | 662 | 2013 |
| Plymouth Road over Rock Brook | Good | 44.0 ft | 657 | 1997 |
| Aspetuck Ridge RD over Merryall Brook | Good | 26.2 ft | 645 | 2014 |
| Selleck Hill Road over Wachocastinook Brook | Good | 47.6 ft | 645 | 2002 |
| Cedar Hill Road over Morrissey Brook | Good | 34.1 ft | 644 | 2003 |
| Crane Hollow RD #3 over Weekeepeemee River | Good | 44.0 ft | 595 | 1988 |
| Salmon Kill Road over Salmon Creek | Good | 50.2 ft | 570 | 2002 |
| West Road over E. Branch Naugatuck Rv. | Good | 23.6 ft | 570 | 2017 |
| Route 183 over Sandy Brook | Good | 81.7 ft | 550 | 1958 |
| SR 478(n Shore Rd) over Sucker Brook | Good | 46.9 ft | 550 | 1957 |
| Napco Drive over Pequabuck River | Good | 32.5 ft | 550 | 2024 |
| Upland Road over East Aspetuck River | Good | 62.0 ft | 547 | 2023 |
| Woodward Road over East Morris Brook | Good | 30.5 ft | 546 | 1997 |
| Maple Hollow Road over North Nepaug River | Good | 21.0 ft | 540 | 1987 |
| Northfield Road over Naugatuck River | Good | 215.9 ft | 530 | 2011 |
| Mill Street over Great Brook | Good | 30.8 ft | 530 | 2018 |
| Whites Woods RD #1 over Bantam River | Good | 92.2 ft | 520 | 2017 |
| River Road over Little Jacks Brook | Good | 24.0 ft | 518 | 1934 |
| Campville Road over Naugatuck Railroad Co. | Good | 43.3 ft | 500 | 1955 |
| Bulls Bridge Road over Power Station Canal | Good | 35.1 ft | 500 | 1991 |
| Blackberry Street over Blackberry River | Good | 28.9 ft | 498 | 1937 |
| Milton Road over Marshepaug River | Good | 29.9 ft | 477 | 1940 |
| Hazel Plain Road over Sprain Brook | Good | 43.3 ft | 477 | 2019 |
| North Shore Road over Bantam River | Good | 71.9 ft | 444 | 1980 |
| Gillette Road over Torringford Brook | Good | 35.1 ft | 420 | 1956 |
| Route 43 over Hollenbeck River | Good | 71.9 ft | 400 | 1989 |
| Skilton Road over Nonewaug River | Good | 32.2 ft | 394 | 1860 |
| Romford Road over Shepaug River | Good | 102.0 ft | 393 | 2018 |
| Wood Creek Road over Weekeepeemee River | Good | 37.1 ft | 393 | 1956 |
| Allyndale Road over Konkapot River | Good | 75.1 ft | 378 | 1982 |
| Milton Road #2 over Marshepaug River | Good | 40.4 ft | 318 | 2020 |
| Water Street over Housatonic River | Good | 132.5 ft | 286 | 2016 |
| Dings Road over Nepaug River | Good | 32.2 ft | 270 | 1956 |
| Tunnel Road over Shepaug River | Good | 123.0 ft | 263 | 1956 |
| Tobey Hill Road over Whiting River | Good | 43.0 ft | 257 | 2021 |
| Emmons Lane over Whiting River | Good | 36.1 ft | 255 | 2009 |
| Magnolia Hill Road over East Spring Brook | Good | 25.9 ft | 255 | 1955 |
| Nonnewaug Road over East Spring Brook | Good | 34.1 ft | 253 | 2021 |
| Smokey Hollow Road over Bantam River | Good | 99.4 ft | 252 | 1956 |
| Westside Road over Blackberry River | Good | 25.9 ft | 252 | 1940 |
| Stoddard Road over Bantam River | Good | 47.9 ft | 250 | 2004 |
| E Litchfield RD #2 over Spruce Brook | Good | 21.0 ft | 244 | 1956 |
| Popple Swamp Road over Furnace Brook | Good | 29.9 ft | 227 | 1994 |
| Skipper Avenue over Turkey Brook | Good | 21.0 ft | 212 | 2005 |
| West Side Road over West Side Pond Brook | Good | 30.8 ft | 211 | 1955 |
| Ford Hill Road over Hollenbeck River | Good | 37.1 ft | 194 | 1955 |
| Wilson Road over Gulf Stream | Good | 21.0 ft | 190 | 2001 |
| Walker Brook Rd#3 over Walker Brook | Good | 32.2 ft | 188 | 2001 |
| Wheeler Road over Spruce Brook | Good | 21.0 ft | 186 | 1956 |
| Blue Swamp Road over W Branch Shepaug River | Good | 49.9 ft | 186 | 2014 |
| Saw Mill Road over Marshepaug River | Good | 28.9 ft | 184 | 1955 |
| Catlin Road over Lake Harwinton Dam | Good | 92.8 ft | 174 | 2009 |
| Cobble Road over Cobble Brook | Good | 27.9 ft | 161 | 2011 |
| Old Grassy Hill RD over Good Hill Brook | Good | 23.6 ft | 150 | 1970 |
| Dibble Hill Road over Mill Brook | Good | 21.0 ft | 131 | 1970 |
| Trumbull Street over Bantam River | Good | 39.0 ft | 125 | 1986 |
| Carter Road over Kent Falls Brook | Good | 24.6 ft | 125 | 2017 |
| Whittlesey Road over Shepaug River | Good | 68.9 ft | 120 | 1991 |
| Ashpohtag Road over North Brook | Good | 21.0 ft | 117 | 1979 |
| Riverview Road over Bull Mountain Brook | Good | 24.9 ft | 106 | 2018 |
| West Woods RD No.2 over Guinea Brook | Good | 21.0 ft | 106 | 2016 |
| Lower River RD #1 over Mill Brook | Good | 26.9 ft | 100 | 2012 |
| Shear Shop Road over Mashepaug River | Good | 37.7 ft | 100 | 2008 |
| Waller Road over Bull Mountain Brook | Good | 27.6 ft | 74 | 1998 |
| Shingle Mill Road over Rock Brook | Good | 52.2 ft | 64 | 2019 |
| High Bridge Road over Bantam River | Good | 24.0 ft | 64 | 2008 |
| Old Mill Road over East Aspetuck River | Good | 39.7 ft | 63 | 2001 |
| Old RTE 254-upper over Northfield Brook | Good | 37.4 ft | 60 | 1955 |
| Flat Rocks Road over W Branch Shepaug River | Good | 23.0 ft | 54 | 2017 |
| Sunny Lane over Turkey Brook | Good | 20.0 ft | 50 | 2005 |
| Gray Road over North Brook | Good | 24.9 ft | 40 | 1956 |
| Tunnel Road over Kirby Brook | Good | 24.0 ft | 31 | 1956 |
| Smith Place over Mill Brook | Good | 26.9 ft | 25 | 1955 |
| Mud Pond Road over Bull Mountain Brook | Good | 23.3 ft | 21 | 2022 |
| Greystone Road Ext over Todd-hollow & Hancock | Good | 76.1 ft | 12 | 1998 |
| Old Northfield RD over Branch Brook | Good | 50.9 ft | 4 | 1950 |
| Main Park Road over E.branch Naugatuck River | Good | 67.9 ft | 1 | 1969 |