Historic Bridges in Maryland
968 bridges built before 1951 in Maryland still in service today.
Bridges Built Before 1951
The United States has 968 bridges in Maryland built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.
| Bridge | State | Condition | Year Built | Age (Years) | ADT |
|---|---|---|---|---|---|
| C&O CANAL | Maryland | Fair | 1890 | 136 | 159 |
| WESTERN RUN | Maryland | Fair | 1893 | 133 | 3,524 |
| LITTLE GUNPOWDER FALLS | Maryland | Fair | 1894 | 132 | 552 |
| JONES FALLS FALLS RD RR | Maryland | Fair | 1895 | 131 | 20,361 |
| MIDDLE CREEK | Maryland | Fair | 1897 | 129 | 460 |
| GUNPOWDER FALLS | Maryland | Fair | 1898 | 128 | 275 |
| BRADDOCK RUN | Maryland | Good | 1900 | 126 | 599 |
| FLINTSTONE CREEK | Maryland | Fair | 1900 | 126 | 1,121 |
| WARRIOR RUN | Maryland | Fair | 1900 | 126 | 15,191 |
| TRIB TO NORTH BR POTOMAC | Maryland | Fair | 1900 | 126 | 7,111 |
| MILL RUN | Maryland | Fair | 1900 | 126 | 7,111 |
| GWYNNS FALLS | Maryland | Fair | 1900 | 126 | 20,280 |
| NORTH BRANCH | Maryland | Fair | 1900 | 126 | 900 |
| NORTH BRANCH | Maryland | Fair | 1900 | 126 | 5,500 |
| MASON BRANCH | Maryland | Fair | 1900 | 126 | 2,942 |
| LITTLE PIPE CREEK | Maryland | Fair | 1900 | 126 | 400 |
| OCTORARO CREEK | Maryland | Fair | 1900 | 126 | 3,250 |
| BR OF NORTHEAST CREEK | Maryland | Fair | 1900 | 126 | 2,360 |
| MILL RUN | Maryland | Fair | 1900 | 126 | 3,990 |
| PAGES SWAMP | Maryland | Fair | 1900 | 126 | 5,771 |
| YOUGHIOGHENY RIVER | Maryland | Poor | 1900 | 126 | 1,660 |
| LITTLE PATUXENT RIVER | Maryland | Fair | 1900 | 126 | 20,330 |
| WESTERN BRANCH | Maryland | Fair | 1900 | 126 | 11,061 |
| WATTS BRANCH | Maryland | Fair | 1900 | 126 | 23,842 |
| RED LION BRANCH | Maryland | Fair | 1900 | 126 | 2,182 |
| PASSERDYKE CREEK | Maryland | Fair | 1900 | 126 | 27,695 |
| NORWICH CREEK | Maryland | Fair | 1900 | 126 | 310 |
| LITTLE CONOCOCHEAGUE CRE | Maryland | Fair | 1900 | 126 | 3,912 |
| LANDIS SPRING BRANCH | Maryland | Fair | 1900 | 126 | 6,082 |
| MARSH RUN | Maryland | Fair | 1900 | 126 | 12,172 |
| BEAVER CREEK | Maryland | Fair | 1900 | 126 | 4,961 |
| BEAVER CREEK | Maryland | Fair | 1900 | 126 | 599 |
| WILLS CREEK | Maryland | Fair | 1900 | 126 | 142 |
| BRADDOCK RUN | Maryland | Fair | 1900 | 126 | 135 |
| LITTLE FALLS | Maryland | Good | 1900 | 126 | 521 |
| NO. 9 TROLLEY TRAIL | Maryland | Fair | 1900 | 126 | 1,741 |
| AMTRAK | Maryland | Fair | 1900 | 126 | 9,999 |
| STONEY RUN | Maryland | Poor | 1900 | 126 | 4,280 |
| CHINQUAPIN RUN | Maryland | Fair | 1900 | 126 | 11,996 |
| NORFOLK SOUTHERN RAILROA | Maryland | Fair | 1900 | 126 | 14,403 |
| CSX RAILROAD | Maryland | Fair | 1900 | 126 | 27,130 |
| MINEBANK RUN | Maryland | Fair | 1900 | 126 | 309 |
| FALLSWAY | Maryland | Fair | 1900 | 126 | 1,695 |
| AMTRAK RAILROAD | Maryland | Fair | 1900 | 126 | 3,598 |
| CSX RAILROAD | Maryland | Poor | 1900 | 126 | 10,713 |
| CSX RAILROAD | Maryland | Fair | 1900 | 126 | 7,434 |
| CSX | Maryland | Fair | 1900 | 126 | 10,312 |
| LITTLE NORTHEAST CREEK | Maryland | Fair | 1900 | 126 | 4,014 |
| BASIN RUN | Maryland | Fair | 1900 | 126 | 165 |
| MONOCACY RIVER | Maryland | Fair | 1900 | 126 | 260 |
About Historic Bridge Data
Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.