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 |
|---|---|---|---|---|---|
| LITTLE FALLS | Maryland | Fair | 1809 | 217 | 499 |
| ANTIETAM CREEK | Maryland | Fair | 1823 | 203 | 6,082 |
| BEAVER CREEK | Maryland | Fair | 1824 | 202 | 2,592 |
| ANTIETAM CREEK | Maryland | Fair | 1824 | 202 | 778 |
| CONOCOCHEAGUE CREEK | Maryland | Fair | 1829 | 197 | 4,532 |
| CONOCOCHEAGUE CREEK | Maryland | Good | 1829 | 197 | 265 |
| GROVE CREEK | Maryland | Fair | 1830 | 196 | 194 |
| ANTIETAM CREEK | Maryland | Fair | 1830 | 196 | 1,173 |
| ANTIETAM CREEK | Maryland | Fair | 1832 | 194 | 720 |
| LITTLE ANTIETAM CREEK | Maryland | Good | 1832 | 194 | 362 |
| ANTIETAM CREEK | Maryland | Fair | 1833 | 193 | 2,592 |
| ANTIETAM CREEK | Maryland | Good | 1833 | 193 | 12,292 |
| ANTIETAM STREET | Maryland | Fair | 1836 | 190 | 2,730 |
| ANTIETAM CREEK | Maryland | Good | 1839 | 187 | 1,470 |
| ANTIETAM CREEK | Maryland | Good | 1839 | 187 | 1,698 |
| SAVAGE RIVER | Maryland | Fair | 1840 | 186 | 4 |
| ANTIETAM CREEK | Maryland | Good | 1840 | 186 | 1,698 |
| ANTIETAM CREEK | Maryland | Good | 1841 | 185 | 1,698 |
| LITTLE ANTIETAM CREEK | Maryland | Fair | 1850 | 176 | 1,560 |
| OWENS CREEK | Maryland | Good | 1856 | 170 | 1,170 |
| LITTLE ANTIETAM CREEK | Maryland | Fair | 1858 | 168 | 1,173 |
| FISHING CREEK | Maryland | Fair | 1860 | 166 | 298 |
| BIG ELK CREEK | Maryland | Fair | 1860 | 166 | 10 |
| ANTIETAM CREEK | Maryland | Good | 1863 | 163 | 580 |
| CABIN JOHN CREEK | Maryland | Fair | 1863 | 163 | 12,300 |
| LITTLE GUNPOWDER FALLS | Maryland | Fair | 1865 | 161 | 548 |
| OWENS CREEK | Maryland | Fair | 1869 | 157 | 843 |
| TOMS CREEK | Maryland | Fair | 1876 | 150 | 470 |
| CATOCTIN CREEK | Maryland | Poor | 1878 | 148 | 390 |
| CARROLL BRANCH | Maryland | Fair | 1879 | 147 | 2,534 |
| TOWSON RUN | Maryland | Fair | 1879 | 147 | 896 |
| C&O CANAL | Maryland | Fair | 1879 | 147 | 200 |
| CATOCTIN CREEK | Maryland | Fair | 1880 | 146 | 136 |
| OWENS CREEK | Maryland | Fair | 1882 | 144 | 360 |
| DEER CREEK | Maryland | Poor | 1883 | 143 | 70 |
| GUNPOWDER FALLS | Maryland | Fair | 1884 | 142 | 300 |
| OCTORARO CREEK | Maryland | Fair | 1884 | 142 | 1,279 |
| BASIN RUN | Maryland | Fair | 1884 | 142 | 526 |
| CSXT RAILROAD | Maryland | Poor | 1885 | 141 | 109 |
| CONOWINGO CREEK | Maryland | Fair | 1885 | 141 | 136 |
| CASSELMAN RIVER | Maryland | Poor | 1885 | 141 | 130 |
| LITTLE GUNPOWDER FALLS | Maryland | Fair | 1886 | 140 | 223 |
| GWYNNS FALLS | Maryland | Fair | 1887 | 139 | 20,504 |
| OWENS CREEK | Maryland | Good | 1887 | 139 | 59 |
| GUNPOWDER FALLS | Maryland | Poor | 1888 | 138 | 2,589 |
| MIDDLE CREEK | Maryland | Fair | 1889 | 137 | 1,951 |
| HUNTING CREEK | Maryland | Fair | 1890 | 136 | 135 |
| LITTLE PIPE CREEK | Maryland | Fair | 1890 | 136 | 200 |
| SIDELING HILL CREEK | Maryland | Fair | 1890 | 136 | 66 |
| BEAVER CREEK | Maryland | Fair | 1890 | 136 | 678 |
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.