| State Route 299 over Pit River | Poor | 305.1 ft | 1,200 | 1962 |
| U.s. Highway 395 over North Fork Pit River | Fair | 137.1 ft | 4,000 | 1982 |
| U.s. Highway 395 over Parker Creek | Fair | 35.1 ft | 4,000 | 1954 |
| U.s. Highway 395 over South Fork Pit River | Fair | 169.9 ft | 2,400 | 1971 |
| U.s. Highway 395 over Up Rr | Fair | 164.4 ft | 2,400 | 1971 |
| U.s. Highway 395 over Up Rr | Fair | 157.2 ft | 2,400 | 1971 |
| State Route 299 over W Br Cloverswale Creek | Fair | 24.0 ft | 2,200 | 1920 |
| Lookout-hackmore R over Pit River | Fair | 146.7 ft | 2,068 | 1975 |
| U.s. Highway 395 over South Fork Pit River | Fair | 91.9 ft | 2,000 | 1947 |
| U.s. Highway 395 over North Fork Pit River | Fair | 62.0 ft | 2,000 | 1971 |
| State Route 139 over Up Rr | Fair | 94.2 ft | 2,000 | 1954 |
| State Route 139 over Howards Gulch | Fair | 73.2 ft | 1,600 | 1966 |
| State Route 299 over Dry Creek | Fair | 31.5 ft | 1,400 | 1929 |
| Centerville RD over North Fork Pit River | Fair | 83.0 ft | 1,300 | 1958 |
| State Route 299 over Dutch Flat Creek | Fair | 37.7 ft | 1,110 | 1936 |
| Co RD 56 over Alturas Creek | Fair | 22.0 ft | 800 | 1938 |
| Estes Street over North Fork Pit River | Fair | 81.0 ft | 620 | 1971 |
| Surprise Valley RD over Owl Creek | Fair | 32.2 ft | 450 | 1943 |
| Maine ST over Bidwell Creek | Fair | 23.0 ft | 400 | 1934 |
| County Road 112 over J Canal | Fair | 35.1 ft | 380 | 1940 |
| IRR Co RD 87 over Pit River Slough | Fair | 53.1 ft | 350 | 1955 |
| CR 64/jess Valley over South Fork Pit River | Fair | 62.7 ft | 315 | 1972 |
| IRR Co RD 87 over Pit River Slough | Fair | 63.0 ft | 255 | 1955 |
| CR 54/centerville over North Branch Pit River | Fair | 62.0 ft | 245 | 1958 |
| County Road 75 over Pit River | Fair | 103.3 ft | 202 | 1919 |
| Centerville RD over Canyon Creek Overflow | Fair | 23.0 ft | 200 | 1958 |
| Co RD 60 over Eastside Canal | Fair | 61.0 ft | 200 | 2004 |
| IRR Alpine Rd. 58 over Parker Creek | Fair | 26.9 ft | 200 | 1968 |
| County Road 60 over Westside Canal | Fair | 61.0 ft | 150 | 1985 |
| CR 71 over Canyon Creek | Fair | 41.0 ft | 150 | 1986 |
| CR 85 over Pit River | Fair | 150.9 ft | 100 | 2006 |
| IRR BIA RTE 76 over North Fork Of Pit River | Fair | 158.1 ft | 100 | 2003 |
| Co RD 198 over Rush Creek | Fair | 26.9 ft | 75 | 1923 |
| Blue Lake Road over South Fork Pit River | Fair | 197.8 ft | 60 | 1957 |
| Road 63 over Stones Canyon | Fair | 30.8 ft | 50 | 1976 |
| Jones LN -co RD 61 over Middle Canal | Fair | 54.1 ft | 50 | 2013 |
| No Data Entered over Lassen Creek | Fair | 29.9 ft | 50 | 1962 |
| Old Blue Lake Road over South Fork Pit River | Fair | 42.3 ft | 50 | 1952 |
| 42n31 over South Fork Parker Creek | Fair | 78.1 ft | 50 | 1969 |
| 42n35 over Turner Creek | Fair | 35.1 ft | 50 | 1969 |
| County Road 215 over Howards Gulch | Fair | 39.0 ft | 32 | 1931 |
| CR 87a over Ash Creek | Fair | 42.3 ft | 23 | 1950 |
| Co RD 133c over Willow Creek | Fair | 29.9 ft | 20 | 1987 |
| 41n11 over Johnson Creek | Fair | 40.0 ft | 0 | 1972 |
| State Route 299 over Rattlesnake Creek | Good | 71.9 ft | 3,000 | 1980 |
| State Route 299 over Rock Creek | Good | 29.2 ft | 2,800 | 1937 |
| U.s. Highway 395 over South Fork Pit River | Good | 162.1 ft | 2,400 | 1971 |
| IRR Lkout-hkmore R over Pit River Overflow | Good | 22.3 ft | 2,055 | 1975 |
| State Route 299 over Cloverswale Creek | Good | 84.0 ft | 2,000 | 1991 |
| State Route 299 over Ash Creek | Good | 149.9 ft | 1,600 | 2020 |
| State Route 299 over Rush Creek | Good | 140.1 ft | 1,500 | 1964 |
| State Route 299 over Rush Creek | Good | 100.1 ft | 1,500 | 1964 |
| State Route 299 over Butte Creek | Good | 60.0 ft | 1,400 | 2020 |
| State Route 299 over Caldwell Creek | Good | 42.7 ft | 1,350 | 2019 |
| State Route 299 over North Fork Ash Creek | Good | 45.9 ft | 1,110 | 2012 |
| Centerville RD over South Fork Pit River | Good | 103.0 ft | 1,000 | 1958 |
| IRR Co RD 87 over Pit River Slough | Good | 52.5 ft | 350 | 1955 |
| IRR Co RD 87 over Roberts Slough | Good | 23.0 ft | 255 | 1955 |
| IRR Adin-lkt Cr87 over Roberts Slough | Good | 23.0 ft | 255 | 1955 |
| IRR Co RD 87 over Mamath Slough | Good | 23.0 ft | 255 | 1955 |
| Centerville RD over Middle Branch Pit River | Good | 83.0 ft | 245 | 1958 |
| Centerville RD over South Branch Pit River | Good | 83.0 ft | 245 | 1958 |
| Centerville RD over Toms Creek | Good | 23.0 ft | 245 | 1958 |
| CR 111 over J 14 B Canal | Good | 22.6 ft | 200 | 1954 |
| CR 111 over J 14 A Canal | Good | 22.6 ft | 200 | 1954 |
| County Road 70 over Pit River | Good | 102.4 ft | 185 | 1997 |
| County Road 70 over Pit River | Good | 59.1 ft | 185 | 1996 |
| CR 111 over J Canal | Good | 23.0 ft | 169 | 1954 |
| IRR CR 111 over No 46 Drain | Good | 63.0 ft | 169 | 1954 |
| CR 111 over 45 D Drain | Good | 42.7 ft | 145 | 1954 |
| CR 54/centerville over Canyon Creek | Good | 83.0 ft | 100 | 1958 |
| County Road 86 over Rush Creek | Good | 71.9 ft | 100 | 2019 |
| Jones LN -co RD 61 over Westside Canal | Good | 54.1 ft | 50 | 2013 |
| South Warner Road over East Creek | Good | 75.1 ft | 50 | 1958 |
| 42n16 over Parker Creek | Good | 36.1 ft | 50 | 1969 |
| 38n54 over Juniper Creek | Good | 37.1 ft | 50 | 1970 |
| 39n50 over Ash Creek | Good | 111.9 ft | 50 | 1970 |
| Forest Road 22 over Ash Creek | Good | 42.0 ft | 50 | 1976 |
| 48n48 over Lost River | Good | 49.9 ft | 50 | 1971 |
| County Road 215 over Howards Gulch | Good | 23.6 ft | 32 | 1931 |
| CR 90 over Halls Creek | Good | 29.9 ft | 25 | 1995 |
| IRR Co Road 90 over Pit River | Good | 145.0 ft | 25 | 2001 |
| IRR Co RD 90 over Pit River Overflow | Good | 127.0 ft | 25 | 2001 |
| County Road 45 over Pine Creek | Good | 22.6 ft | 20 | 2016 |
| Co RD 69 over Pit River | Good | 107.9 ft | 19 | 2002 |
| IRR BIA RTE 76 over Mud Creek | Good | 27.2 ft | 10 | 1995 |
| Kowolski Road over Clear Lake Dam Spillway | Good | 101.0 ft | 1 | 1999 |