Home › States › Maryland › St. Mary's CountyBridges in St. Mary's County, Maryland
40 Total Bridges
10 Good
28 Fair
2 Poor
St. Mary's County, Maryland has 40 bridges tracked in the National Bridge Inventory. Of these, 2 (5%) are rated in poor condition and 10 are rated good. The oldest bridge in St. Mary's County is Md 238 over Nelsons Run , built in 1929. The longest is Cedar Point RD over Harpers Creek at 2460.0 feet.
Bridge Condition Length Traffic Year Md 5 over Hilton Run Poor 34.1 ft 8,010 1936 Cornfield Harbor D over Point Lookout Creek Poor 41.0 ft 150 1970 Md 4 over Kingston Creek Fair 275.9 ft 26,801 1980 Md 5 over ST Marys River Fair 78.1 ft 22,642 1955 Md 5 over Mcintosh Run Fair 88.9 ft 22,220 1935 Md 5 over Town Run Fair 62.0 ft 21,360 1990 Md 5 over Glebe Run Fair 81.0 ft 12,500 1955 Md 5 over Eastern Branch Fair 59.4 ft 10,000 2016 Pegg Road over Branch Jarboesville Run Fair 24.3 ft 9,574 1990 Md 245 over Brooks Run Fair 59.1 ft 8,324 1950 Fenwick Street over Town Run Fair 22.6 ft 7,918 1955 Md 5 over Fisherman Creek Fair 23.0 ft 7,244 1936 Wildewood Parkway over Unnamed Stream Fair 58.4 ft 5,900 1995 Md 242 over Tomakokin Creek Fair 28.9 ft 5,491 1936 Md 5 over Church Creek Fair 23.0 ft 4,400 1936 Md 471 over ST Marys River Fair 48.9 ft 4,242 1932 Md 244 over Poplar Hill Creek Fair 23.0 ft 2,517 1938 Md 242 over Br Of ST Clements Creek Fair 40.0 ft 2,431 1951 Md 242 over Locust Run Fair 46.9 ft 2,371 1929 Md 6 over Locks Swamp Creek Fair 23.0 ft 1,951 1930 Md 238 over Nelsons Run Fair 23.0 ft 1,791 1929 Md 238 over Burroughs Run Fair 40.0 ft 1,791 1929 Md 249 over ST Georges Creek Fair 401.9 ft 1,530 1957 Cedar Point RD over Harpers Creek Fair 2460.0 ft 1,440 1952 Cedar Point RD over Goose Creek Fair 61.0 ft 1,440 1952 Hurry RD over Nelsons Run Fair 22.0 ft 1,427 2008 Wildewood Dr. over Unnamed Tributary Fair 23.6 ft 1,024 2010 Greens Crossing Co over Craney Creek Fair 33.1 ft 603 2009 Stoney Run Drive over Warehouse Run Fair 20.0 ft 478 1995 Delabrooke Road over Horse Landing Creek Fair 21.0 ft 200 1971 Md 5 over Branch Of Mcintosh Run Good 20.0 ft 22,220 2017 Md 234 over Budds Creek Good 49.9 ft 6,221 1960 Md 242 over Dynard Run Good 69.9 ft 5,491 1960 Md 471 over St. Marys River Good 63.0 ft 4,242 1990 Md 6 over Persimmon Creek Good 59.4 ft 4,200 2021 Mechanicsville RD over Chaptico Creek Good 101.0 ft 2,876 2011 Md 242 over ST Clements Creek Good 81.0 ft 2,371 2000 Md 470 over Tomakokin Creek Good 29.9 ft 1,453 1997 Ben Oaks Drive over Persimmon Creek Good 47.9 ft 978 2009 Doctor Johnson Roa over St. Clements Creek Good 41.0 ft 880 1975