| US 30; Lincoln HWY over Rocky Mt Creek | Poor | 49.9 ft | 15,365 | 1948 |
| US 11; SR 0011 over Norfolk Southern Rr | Poor | 59.1 ft | 10,328 | 1937 |
| Fifth AVE over Falling Spring Branch | Poor | 29.9 ft | 6,000 | 1930 |
| Pa 641; Forge Hill over Trout Run | Poor | 36.1 ft | 4,513 | 1980 |
| Kennedy Street over Falling Spring Creek | Poor | 24.0 ft | 3,750 | 1930 |
| West King Street over Falling Spring Creek | Poor | 64.0 ft | 3,535 | 1918 |
| Pa 75; SR 0075 over Bucks Run | Poor | 22.0 ft | 3,309 | 1953 |
| Pa 75; SR 0075 over Buck Run | Poor | 44.9 ft | 2,105 | 1958 |
| SR 3009 Corner Rd. over Licking Creek | Poor | 75.1 ft | 1,445 | 1961 |
| SR 3007 Lemar Rd. over W Br Conococheague Creek | Poor | 191.9 ft | 1,418 | 1960 |
| Pa 995; SR 0995 over Welsh Run | Poor | 33.1 ft | 1,097 | 1933 |
| Sewage Plant Road over Conococheague Creek | Poor | 73.2 ft | 1,000 | 1984 |
| Limekiln Drive over Falling Spring | Poor | 22.0 ft | 1,000 | 1984 |
| SR 3005 over E Br Conococheaque Creek | Poor | 192.9 ft | 980 | 1941 |
| T-489 Kriner RD over Csx Rr | Poor | 44.0 ft | 950 | 2001 |
| SR 4004 over Conodoguinet Creek | Poor | 61.0 ft | 609 | 1825 |
| Cornertown RD over Conococheague Creek | Poor | 96.1 ft | 600 | 1961 |
| SR 4006 Stone Br. over W Br Conococheague Creek | Poor | 107.9 ft | 518 | 1907 |
| Dickeys RD over Buck Run | Poor | 46.9 ft | 500 | 1925 |
| SR 3004;bino Rd. over Conococheague Creek | Poor | 149.9 ft | 437 | 1949 |
| Shimpstown RD over Licking Creek | Poor | 77.1 ft | 300 | 1960 |
| Coble Road over Wilson Run | Poor | 33.1 ft | 300 | 1971 |
| T-604 Muddy Run RD over Muddy Run | Poor | 40.0 ft | 275 | 1963 |
| Burnt Mill Road over Conodoguinet Creek | Poor | 108.9 ft | 250 | 1885 |
| Anderson Road over Conococheague Creek W Br | Poor | 83.0 ft | 150 | 1820 |
| Cedar Street T-481 over Back Creek | Poor | 119.1 ft | 100 | 1876 |
| I-81;SR0081;T-490 over Br. Of Conococheague Cr. | Fair | 26.9 ft | 45,479 | 1963 |
| I-81 Nb; SR 0081 over US 30; SR 0030 | Fair | 148.0 ft | 24,134 | 1963 |
| 81 NB over Conococheague | Fair | 317.9 ft | 23,798 | 2010 |
| 81 SB Road over Conococheague | Fair | 317.9 ft | 23,776 | 2010 |
| I-81 Sb; SR 0081 over Pa 16; SR 0016 | Fair | 139.1 ft | 23,493 | 1963 |
| I-81 Nb; SR 0081 over Pa 16; SR 0016 | Fair | 139.1 ft | 22,946 | 1963 |
| I-81 Nb; SR 0081 over Csx; Western Md. R.r. | Fair | 154.9 ft | 21,737 | 1963 |
| I-81 Nb; SR 0081 over Pa 316; SR 0316 | Fair | 142.1 ft | 21,737 | 1963 |
| Pa Tpk (i-76) over Pa Tpk Ramp | Fair | 44.0 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over T-563 | Fair | 25.9 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over Conococheague CR | Fair | 26.9 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over T-565 | Fair | 25.9 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over SR 0075 | Fair | 124.0 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over SR 641 | Fair | 41.0 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over T-575 | Fair | 25.9 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over Trout Run | Fair | 29.9 ft | 21,433 | 1939 |
| I-81 Sb; SR 0081 over US 30; SR 0030 | Fair | 149.0 ft | 21,345 | 1963 |
| I-81 Sb; SR 0081 over Csx; Western Md. R.r. | Fair | 154.9 ft | 20,745 | 1963 |
| I-81 Sb; SR 0081 over Pa 316; SR 0316 | Fair | 142.1 ft | 20,745 | 1963 |
| I-81 Sb; SR 0081 over SR 2002 Leitersburg Road | Fair | 107.9 ft | 19,180 | 1963 |
| Pa 16;buchanan Trl over Conococheague Creek | Fair | 193.9 ft | 14,535 | 1941 |
| US 30; Linc.hwy. over Trib Conococheague Cr. | Fair | 50.9 ft | 14,284 | 1949 |
| Pa Route 16 over Ebr Antietam Creek | Fair | 53.1 ft | 14,219 | 1934 |
| Pa Route 16 over Ebr Antietam Creek | Fair | 29.9 ft | 14,219 | 1928 |
| US 11; Molly Pitch over I-81; SR 0081 | Fair | 274.0 ft | 12,245 | 1960 |
| US Route 30 WB over Tr Conococheague Creek | Fair | 74.1 ft | 10,617 | 1904 |
| Pa 696; Olde Scotl over I-81; SR 0081 | Fair | 262.1 ft | 9,289 | 1963 |
| Pa 316; Wayne Hwy. over Trib.w.br.lit. Antietam | Fair | 30.8 ft | 9,122 | 1931 |
| Pa 16; Main St. over Steigers Run | Fair | 33.1 ft | 8,813 | 1941 |
| SR 0316 Wayne Av over Norfolk Southern Rr | Fair | 165.0 ft | 8,673 | 1934 |
| Pa 997; SR 0997 over Norfolk Southern Rr | Fair | 50.9 ft | 8,469 | 1970 |
| US 11 Nb; SR 0011 over Falling Springs CR | Fair | 28.9 ft | 8,162 | 1909 |
| Pa 696; S.fayette over Shirley Run | Fair | 23.0 ft | 7,253 | 1954 |
| T-491; Kriner RD over I-81; SR 0081 | Fair | 195.9 ft | 6,466 | 1963 |
| US 30;lincoln HWY over W Br Conococheague Creek | Fair | 117.1 ft | 5,885 | 1959 |
| SR 1003 over Conococheague Creek | Fair | 111.9 ft | 5,451 | 1970 |
| SR 1003;woodstock over I-81; SR 0081 | Fair | 222.1 ft | 5,451 | 1963 |
| Pa 316; Wayne Hwy. over Little Antietam Creek | Fair | 33.1 ft | 5,444 | 1929 |
| SR 2007;midvale RD over Falls Run | Fair | 30.8 ft | 5,303 | 1962 |
| Pa Route 316 over Ebr Antietam Creek | Fair | 97.1 ft | 5,272 | 2011 |
| Pa 997; Black Gap over Conococheague Creek | Fair | 94.2 ft | 5,198 | 1969 |
| T-513; Mckinley ST over I-81; SR 0081 | Fair | 200.1 ft | 4,309 | 1963 |
| Pa 997; Cumb.hwy. over Conodoguinet Creek | Fair | 26.9 ft | 4,225 | 1929 |
| Pa997;cumberland H over Trib. Conodoguinet Creek | Fair | 24.0 ft | 4,203 | 1929 |
| SR 2029 over Falling Spring Creek | Fair | 69.9 ft | 3,735 | 1975 |
| West King Street over Conococheague Creek | Fair | 59.1 ft | 3,700 | 1828 |
| Pa-997;anthony HWY over E. Br.little Antietam Ck | Fair | 564.0 ft | 3,634 | 1988 |
| Sr4010;commerce ST over Conococheague Creek | Fair | 117.1 ft | 3,596 | 1990 |
| SR 3002 Willamson over Muddy Run | Fair | 126.0 ft | 2,979 | 1957 |
| SR 2007 over Br. Little Antietam Cree | Fair | 35.1 ft | 2,911 | 1971 |
| SR 2007 over Br. Little Antietam Cree | Fair | 51.8 ft | 2,911 | 1971 |
| SR 2007 Mentzer RD over Br. Little Antietam Cree | Fair | 54.1 ft | 2,911 | 1971 |
| Sr1004;scotland Av over Conococheague Creek | Fair | 106.0 ft | 2,885 | 1928 |
| Walter Avenue over Norfolk Southern Railway | Fair | 125.0 ft | 2,800 | 1988 |
| Pa 641; Timmons RD over Dry Run | Fair | 43.0 ft | 2,708 | 1933 |
| Pa 641;timmons Rd. over W Br Conococheague Creek | Fair | 84.0 ft | 2,708 | 1991 |
| Sr3012;social Isle over Conococheague Creek | Fair | 76.1 ft | 2,696 | 1860 |
| SR 4016 Roxbury R over Conodoguinet Creek | Fair | 105.0 ft | 2,691 | 1964 |
| T-351 (hykes Rd) over I-81; SR 0081 | Fair | 216.9 ft | 2,618 | 1960 |
| Pa 75; Path Valley over Spring Run | Fair | 33.1 ft | 2,507 | 1955 |
| Pa 914; Swamp Fox over I-81; SR 0081 | Fair | 200.1 ft | 2,431 | 1963 |
| Pa 163;mason Dixon over I-81; SR 0081 | Fair | 310.0 ft | 2,282 | 1960 |
| T481 Boyer Mill RD over Conococheague Creek | Fair | 160.1 ft | 2,250 | 2003 |
| SR 2008;pen-mar RD over Falls Creek | Fair | 29.9 ft | 2,195 | 1971 |
| Pa696;old Scotland over Phillaman Run | Fair | 21.0 ft | 2,192 | 1963 |
| SR 1001 over Cold Spring Run | Fair | 24.9 ft | 2,125 | 1955 |
| Pa 75; SR 0075 over Welsh Run | Fair | 24.9 ft | 1,907 | 1955 |
| SR 2008 over Csx; Western Maryland Rr | Fair | 35.1 ft | 1,873 | 1984 |
| SR 4010 over N. Br Wilson Run | Fair | 23.0 ft | 1,684 | 1926 |
| SR 4010 Edenville over Dennis Creek | Fair | 24.0 ft | 1,684 | 1900 |
| SR 3009 Church Hil over W Br Conococheague | Fair | 190.0 ft | 1,591 | 1968 |
| Pa 75; Path Valley over Trib Of Dry Run | Fair | 23.0 ft | 1,554 | 1953 |
| Pa 75; Path Valley over Dry Run | Fair | 33.1 ft | 1,554 | 1953 |
| SR 1005 over I-81; SR 0081 | Fair | 242.1 ft | 1,545 | 1963 |
| Pa 641; Newburg RD over Trib Paxtons Run | Fair | 22.0 ft | 1,478 | 1981 |
| Pa 641; Newburg RD over Paxtons Run | Fair | 26.9 ft | 1,478 | 1934 |
| Pa 641; Newburg RD over Laughlin Run | Fair | 34.1 ft | 1,478 | 1932 |
| Pa 233;rock Mtn RD over Rocky Mt CR | Fair | 24.9 ft | 1,272 | 1950 |
| Pa-233;rocky Mtn. over Racoon Creek | Fair | 23.0 ft | 1,272 | 1950 |
| Pa 233; Rocky Mtn. over Rocky Mt Creek | Fair | 46.9 ft | 1,272 | 1950 |
| Pa 233; Rocky Mtn. over Rocky Mt CR | Fair | 39.0 ft | 1,272 | 1948 |
| Wilkson Lane over Trib. Conococheague Ck. | Fair | 20.0 ft | 1,268 | 1992 |
| SR 2002 Lietersbrg over Marsh Run | Fair | 38.1 ft | 1,242 | 1925 |
| Pa-995 over Back Creek | Fair | 253.0 ft | 1,201 | 1985 |
| Hade RD over Back Creek Trib | Fair | 43.0 ft | 1,100 | 1930 |
| Pa Route 433 over Rowe Run | Fair | 67.9 ft | 1,098 | 1937 |
| Pa 433;rowe Run RD over Rowe Run | Fair | 59.1 ft | 1,098 | 1960 |
| Pa 433;rowe Run RD over Muddy Run | Fair | 59.1 ft | 1,098 | 1934 |
| Pa 995; Welsh Run over W Br Conococheaque Creek | Fair | 223.1 ft | 1,097 | 1955 |
| Lincoln Ter over Trib To Conococheague Ck | Fair | 20.0 ft | 1,036 | 1992 |
| SR 3013 Stone Br. over East Br Conococheaque | Fair | 140.1 ft | 1,003 | 1930 |
| SR 4009;loudon Rd. over Wilson Run | Fair | 54.1 ft | 1,001 | 1999 |
| Race Track RD over Back Creek Trib | Fair | 42.0 ft | 1,000 | 1964 |
| SR 3002 over Back Creek | Fair | 195.9 ft | 994 | 1973 |
| Sr3002;williamson over Conococheague Creek | Fair | 182.1 ft | 994 | 1973 |
| SR 4018 over Conodoguinet Creek | Fair | 104.0 ft | 956 | 1827 |
| SR 2016 Clayhill over I-81;SR 0081 | Fair | 212.9 ft | 838 | 1963 |
| Turnpike Ramp over Pa Tpk (i-76) | Fair | 160.1 ft | 833 | 2012 |
| Pa 75; Path Valley over Br.tuscarora Creek | Fair | 24.0 ft | 782 | 1930 |
| Pa 75; SR 0075 over Burns Creek | Fair | 37.1 ft | 775 | 1991 |
| Sr2016;clay Hill R over Trib. To Antietam Creek | Fair | 65.9 ft | 757 | 1960 |
| Blairs Valley Road over Branch Of Licking Creek | Fair | 38.1 ft | 750 | 1991 |
| SR 4018 Mcclays Ml over Trib Conodoguinet CR | Fair | 44.9 ft | 702 | 1827 |
| T613;pine Stump RD over I-81; SR 0081 | Fair | 204.1 ft | 658 | 1963 |
| SR 3015;guitner RD over Conococheague Creek | Fair | 117.1 ft | 644 | 1954 |
| T-437; Zarger RD over I-81; SR 0081 | Fair | 221.1 ft | 641 | 1963 |
| Fannettsburg Road over W.br.conococheague Creek | Fair | 100.1 ft | 609 | 1825 |
| Garman DR over Falling Spring Creek | Fair | 33.1 ft | 600 | 1974 |
| T-452; Alleman RD over I-81 ; SR 0081 | Fair | 222.1 ft | 566 | 1963 |
| Pa 456 L. Cove RD over Licking Creek | Fair | 126.0 ft | 507 | 1967 |
| Pa 456; Lit.cove R over Little Cove Creek | Fair | 35.1 ft | 507 | 1937 |
| Cold Spring RD over Conococheague Creek | Fair | 113.8 ft | 500 | 1983 |
| Quarry RD over Falling Spring Creek | Fair | 43.0 ft | 500 | 1987 |
| SR 4007 . over Dry Run | Fair | 24.0 ft | 455 | 1934 |
| Tallow Hill RD over Conococheague Creek | Fair | 66.9 ft | 450 | 1955 |
| Paxton Run Road over Clippingers Run | Fair | 44.0 ft | 428 | 1937 |
| Paxton Run Road over Paxton Run | Fair | 73.2 ft | 428 | 1964 |
| Paxton Run Road over Tr Conodoguinet Creek | Fair | 29.9 ft | 428 | 1937 |
| T-523 Brookens Rd. over Cold Spring Run | Fair | 20.0 ft | 401 | 2000 |
| Kuhn RD over Concocheague Creek | Fair | 140.1 ft | 400 | 1959 |
| Sycamore Grove RD over Conococheague Creek | Fair | 107.0 ft | 400 | 1991 |
| T365 Welty Road over E Br Little Antietam Cre | Fair | 46.9 ft | 400 | 1964 |
| Iron Bridge Road over Wbr Antietam Creek | Fair | 86.0 ft | 377 | 1984 |
| Main Entrance Road over Conococheague Creek | Fair | 36.1 ft | 375 | 2008 |
| Dry Run Road over Dry Run | Fair | 37.1 ft | 350 | 1930 |
| Brindle RD over Conococheague Creek | Fair | 91.9 ft | 350 | 1973 |
| Crottlestown RD over Back Creek | Fair | 49.9 ft | 350 | 1959 |
| SR 4005 Amberson R over Br Of Conococheaque | Fair | 65.9 ft | 311 | 1937 |
| Lehman RD over Conococheague Creek | Fair | 155.8 ft | 300 | 1941 |
| Mcfarland Rd. over Johnston Run | Fair | 36.1 ft | 300 | 1982 |
| Old Forge Road over E. Br. Little Antietam | Fair | 44.0 ft | 300 | 1950 |
| Lyons Road over E.br.little Antietam CR | Fair | 103.0 ft | 300 | 1981 |
| T391 Hess Benedict over W Br Little Antietam Crk | Fair | 36.1 ft | 300 | 2002 |
| T-397 Mt Zion Road over W Br Little Antietam Crk | Fair | 29.9 ft | 300 | 2002 |
| T-603 Limekiln RD over Muddy Run | Fair | 67.9 ft | 275 | 1967 |
| Nunnery Road over Nunnery Creek | Fair | 38.1 ft | 275 | 1982 |
| Woodstock RD over Conococheague Creek | Fair | 86.0 ft | 250 | 1978 |
| Keefer RD over Rocky Spring Branch | Fair | 43.0 ft | 250 | 1998 |
| Hill Road over Conococheague Creek W.br | Fair | 67.9 ft | 250 | 1825 |
| Cool Hollow RD over W Br Concocheague Creek | Fair | 163.1 ft | 250 | 1967 |
| T-459 Grapevine RD over Back Creek Trib | Fair | 29.9 ft | 250 | 1929 |
| Amsterdam Roa over Red Run Creek | Fair | 54.1 ft | 250 | 1964 |
| T-597 Nyesville RD over Rowe Run | Fair | 43.0 ft | 250 | 2006 |
| T-560 Creek Road over Conococheague Creek W.br | Fair | 106.0 ft | 222 | 1967 |
| T-560 Creek Road over Conococheague Creek W.br | Fair | 107.9 ft | 222 | 1950 |
| T-583 Cross Road over Doylestown Stream | Fair | 42.0 ft | 210 | 1968 |
| Briar Lane over Falling Spring Creek | Fair | 34.1 ft | 200 | 1979 |
| Boundary RD over Rocky Spring Trib | Fair | 30.8 ft | 200 | 1997 |
| Sandy Mountain RD over Conodoguinet Tributary | Fair | 24.9 ft | 200 | 1993 |
| Punch Bowl RD over Licking Creek | Fair | 60.0 ft | 200 | 1966 |
| Pump House Road over W Br Little Antietam Trb | Fair | 27.9 ft | 200 | 1920 |
| Rockhill Road over W Br Little Antietam Trb | Fair | 26.9 ft | 200 | 1920 |
| T-420 Keller RD over Campbell Run | Fair | 35.1 ft | 200 | 1997 |
| T458 Jack Mills RD over Back Creek | Fair | 104.0 ft | 200 | 1976 |
| Wenger Road over Wilson Run | Fair | 33.1 ft | 200 | 1962 |
| Goods Dam RD over E. Br. Antietam Crk | Fair | 73.2 ft | 200 | 1975 |
| T-489 Community RD over Wilson Run | Fair | 24.0 ft | 200 | 2005 |
| Burnt Mill Road over Paxton Run | Fair | 21.0 ft | 200 | 1987 |
| T-569 Shearer Road over Dry Run | Fair | 42.0 ft | 150 | 1974 |
| Garnes RD over W Br Conococheague Creek | Fair | 141.1 ft | 150 | 1970 |
| T-462 Peckman DR over Wilson Run | Fair | 42.0 ft | 150 | 1985 |
| Sylvan Drive over Little Cove Creek | Fair | 96.1 ft | 150 | 1964 |
| Campbells Run Road over Campbell Run | Fair | 24.9 ft | 140 | 1977 |
| T-452; Lighthse RD over I-81 SR 0081 | Fair | 222.1 ft | 115 | 1963 |
| SR 3006;milnor Rd. over Trib Conococheague Creek | Fair | 24.0 ft | 101 | 1982 |
| T-568 Dry Run Road over Dry Run | Fair | 24.9 ft | 100 | 1959 |
| New Bridge Road over Conococheague Creek W.br | Fair | 45.9 ft | 100 | 1964 |
| Iron Bridge Road over Lehman Run | Fair | 65.9 ft | 100 | 1973 |
| T-635 Park Road over Conodoguinet Creek | Fair | 86.0 ft | 100 | 1962 |
| Anderson RD over Licking Creek | Fair | 74.1 ft | 100 | 1883 |
| Sylvan Drive over Little Cove Creek | Fair | 62.0 ft | 100 | 1975 |
| Waterloo Road over Falls Creek | Fair | 25.9 ft | 100 | 1934 |
| T-565; Main St. over Unt To West Dry Run | Fair | 51.8 ft | 100 | 1924 |
| Pine Mountain DR over Stump Run | Fair | 23.0 ft | 100 | 1985 |
| SR 3006 over I-81; SR 0081 | Fair | 232.9 ft | 90 | 1960 |
| Mcfarland RD over Conococheague Creek W.br | Fair | 112.9 ft | 75 | 1964 |
| T-572 Mill Road over Conococheague Crk. W.br. | Fair | 45.9 ft | 50 | 1964 |
| Baer Road over Red Run | Fair | 36.1 ft | 50 | 1935 |
| Pennsylvania Ave. over Muddy Run | Fair | 32.5 ft | 50 | 1942 |
| Louisiana AVE over Small Stream | Fair | 35.1 ft | 40 | 1942 |
| Va. Ave. Sta79+54 over Muddy Run | Fair | 35.1 ft | 40 | 1943 |
| Georgia AVE over Small Stream | Fair | 33.5 ft | 35 | 1943 |
| Keefer Road over Conodoguinet Creek | Fair | 40.0 ft | 30 | 1930 |
| Florida AVE & Rr over Muddy Run | Fair | 32.2 ft | 30 | 1942 |
| T-464 Rumler Road over Trib Of Dennis Creek | Fair | 25.9 ft | 25 | 2003 |
| South Patrol RD over Small Stream | Fair | 38.4 ft | 20 | 1942 |
| South Patrol RD over Rocky Springs Branch | Fair | 24.3 ft | 10 | 1943 |
| East Patrol Road over Muddy Run | Fair | 37.7 ft | 5 | 1942 |
| I-81 SR 0081 over Mountain Run | Good | 24.9 ft | 49,536 | 2003 |
| Pa Tpk (i-76) over T-560 Conocoche CR | Good | 113.8 ft | 21,433 | 1939 |
| Pa Tpk (i-76) over SR 4006 Lr264a | Good | 94.2 ft | 21,433 | 2000 |
| Washington Twp Bvd over East Brach Antietam Ck | Good | 109.9 ft | 20,870 | 2009 |
| I-81 Nb; SR 0081 over SR 2002 Leitersburg RD | Good | 106.0 ft | 19,088 | 1963 |
| US Route 11 over Conococheague Creek | Good | 131.9 ft | 14,580 | 2018 |
| US 30; Lincoln HWY over Br. Campbell Run | Good | 35.1 ft | 10,486 | 2021 |
| Pa 316 Wayne Road over Csx | Good | 78.1 ft | 10,185 | 1937 |
| US 30 Eb; SR 0030 over Conococheague Creek | Good | 128.0 ft | 9,801 | 1930 |
| US 30; Lincoln HWY over Back Creek | Good | 91.9 ft | 9,389 | 2015 |
| Pa997; SR 997 over I-81; Sr0081 | Good | 220.1 ft | 8,469 | 2009 |
| Pa Route 16 over Wbr Antietam Creek | Good | 78.1 ft | 8,144 | 2018 |
| US 11 Sb; N.main S over Falling Spring Branch | Good | 25.9 ft | 7,758 | 2021 |
| SR 1010; Walker RD over I-81; SR 0081 | Good | 173.9 ft | 6,316 | 2005 |
| Pa997;cumberland H over Muddy Run | Good | 68.9 ft | 5,841 | 2016 |
| Pa 16; Buchanan Tr over W.br.of Conococheaque CR | Good | 128.0 ft | 5,702 | 1941 |
| SR 1003 over Trib Conococheague | Good | 42.0 ft | 5,451 | 1970 |
| SR 2031;mont Alto over Trib Conococheague Creek | Good | 30.8 ft | 5,121 | 1926 |
| Pa-997;anthony HWY over Nunnery Run | Good | 68.9 ft | 4,829 | 2010 |
| Pa 997; Cumb.hwy. over Conodoguinet Creek | Good | 95.1 ft | 4,225 | 2018 |
| 997;cumberland HWY over Lehman Run | Good | 58.1 ft | 4,203 | 1927 |
| Pa Route 997 over Conodoguinet Creek | Good | 98.1 ft | 4,203 | 2015 |
| Cumberland HWY over Conodoguinet Creek | Good | 86.0 ft | 4,203 | 2018 |
| Pa 16; Buchanan Tr over Buck Run | Good | 32.2 ft | 3,796 | 2015 |
| Pa 997; Main St. over W. Branch Antietam Creek | Good | 20.0 ft | 3,458 | 2023 |
| Washington Twp Blv over Red Run | Good | 27.9 ft | 3,087 | 2010 |
| SR 4010siloam Rd. over Conocheague CR | Good | 85.0 ft | 3,032 | 2011 |
| SR 1004 over Norfolk Southern Rail | Good | 86.0 ft | 2,885 | 1986 |
| SR 1006 Main St. over Mountain Run | Good | 24.0 ft | 2,473 | 2022 |
| Pa 416;mercersburg over Licking Creek | Good | 90.9 ft | 2,435 | 1990 |
| Pa 416; SR 0416 over W Br Conococheague Creek | Good | 147.0 ft | 2,349 | 2018 |
| Sr1001;mt.pleasant over Conococheague Creek | Good | 62.0 ft | 2,125 | 1931 |
| Pa75;ft Loudon RD over Licking Creek | Good | 147.0 ft | 1,898 | 1947 |
| SR 4010 Eden/chees over Rock Sprg.br.of Back Cr. | Good | 88.9 ft | 1,684 | 1940 |
| Pa 533;sr Orrstown over Muddy Run | Good | 188.0 ft | 1,660 | 2013 |
| Jack Road over Back Creek | Good | 127.0 ft | 1,652 | 2011 |
| Sr3009 (oregon St) over Steigers Run | Good | 43.0 ft | 1,591 | 1968 |
| Pa 641; Newburg RD over Clippinger Run | Good | 25.9 ft | 1,478 | 1933 |
| SR 2019 Five Forks over Trib. Antietam Creek | Good | 21.0 ft | 1,405 | 2007 |
| Rocky Mountain RD over Carbaugh Run | Good | 65.0 ft | 1,272 | 2018 |
| Pa 433; Tanyard Hl over Conodoguinet Creek | Good | 126.0 ft | 1,122 | 2010 |
| SR 2002;marsh Rd. over W. Br. Antietam Creek | Good | 91.9 ft | 1,118 | 2010 |
| SR 4002 (main St.) over W Br Conococheague Creek | Good | 130.9 ft | 1,029 | 2001 |
| SR 2017 over Trib W Br Lit Antietam | Good | 38.1 ft | 1,001 | 2011 |
| SR 533 Orrstown RD over Lehman Run | Good | 29.9 ft | 989 | 2017 |
| SR 3013 over Back Creek | Good | 198.2 ft | 983 | 2011 |
| T-467; Glfrd Sprng over I-81; SR 0081 | Good | 203.1 ft | 948 | 1963 |
| SR 4010 over Wilson Run | Good | 42.0 ft | 720 | 2016 |
| Sr3011;mountain RD over Buck Run | Good | 24.9 ft | 693 | 2020 |
| T-455; Overcash RD over I-81; SR 0081 | Good | 208.0 ft | 624 | 1963 |
| Fort Mccord Road over Back Creek | Good | 92.8 ft | 622 | 2016 |
| Fort Mccord RD over Dennis Creek | Good | 69.9 ft | 622 | 2016 |
| SR 4006 Cold Spr. over Pa Turnpike | Good | 350.1 ft | 606 | 2007 |
| South Church ST over Trib. E. Br. Antietam CR | Good | 20.0 ft | 600 | 2009 |
| Leafmore RD over Back Creek | Good | 91.9 ft | 600 | 2024 |
| Sr2001 Browns Mil over Br Muddy Run Creek | Good | 25.9 ft | 572 | 2005 |
| Hykes Road over Norfolk Southern Rr | Good | 132.9 ft | 500 | 2012 |
| SR 4007 Edge Rd. over Br.tuscarora Creek | Good | 88.9 ft | 455 | 2012 |
| Twin Bridge RD over Wilson Run | Good | 37.1 ft | 400 | 1976 |
| T-399 Stamey Hill over W Br Little Antietam Crk | Good | 25.9 ft | 350 | 2002 |
| Twin Bridge RD over Dennis Creek | Good | 43.0 ft | 307 | 2012 |
| Nunnery Road over W Br Little Antietam Crk | Good | 50.9 ft | 300 | 1982 |
| T-421 Gehr RD over Campbell Run | Good | 42.0 ft | 275 | 1974 |
| T-330 Heisey Road over W Br Conococheague | Good | 128.9 ft | 257 | 2021 |
| Big Spring Road over Br. Tuscarora Creek | Good | 43.0 ft | 251 | 2016 |
| Store Lane over W. Br. Concococheague CR | Good | 40.0 ft | 250 | 2015 |
| SR 3017 Pioneer DR over Campbell Run | Good | 23.0 ft | 224 | 1982 |
| T-646 W. Creek RD over Paxton Run | Good | 43.0 ft | 200 | 1978 |
| Rocky Spring RD over Rocky Spring Trib | Good | 25.9 ft | 200 | 2003 |
| SR 3026 over Little Cove Creek | Good | 109.9 ft | 132 | 2007 |
| T-456 Etter Road over E Br Conococheague CR | Good | 83.0 ft | 100 | 1904 |
| Claylick RD over Licking Creek Branch | Good | 26.9 ft | 100 | 1997 |
| Maple Street over Trib.e. Br. Antietam CR | Good | 20.0 ft | 100 | 2009 |
| Montgomery Trail over Trout Run | Good | 39.0 ft | 30 | 2019 |
| Wirt Road over E Br Antietam Creek | Good | 37.1 ft | 20 | 1999 |
| Rattlesnake Run RD over E Br Antietam Creek | Good | 39.0 ft | 20 | 1999 |
| District Road over Raccoon Creek | Good | 34.1 ft | 10 | 2016 |
| Weaver Road T-341 over Conococheague Creek | Good | 208.0 ft | 5 | 1849 |