Historic Bridges in Maine
630 bridges built before 1951 in Maine still in service today.
Bridges Built Before 1951
The United States has 630 bridges in Maine 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 |
|---|---|---|---|---|---|
| E.BR.WESSERUNSET STREAM | Maine | Poor | 1935 | 91 | 1,020 |
| MEGUNTICOOK RIVER | Maine | Poor | 1935 | 91 | 830 |
| TIDAL INLET | Maine | Fair | 1935 | 91 | 406 |
| SEBASTICOOK RIVER | Maine | Poor | 1935 | 91 | 3,860 |
| SANDY RIVER | Maine | Fair | 1935 | 91 | 219 |
| WEBB BROOK | Maine | Fair | 1935 | 91 | 1,073 |
| UNION RIVER | Maine | Fair | 1935 | 91 | 515 |
| NEWTON BROOK | Maine | Fair | 1935 | 91 | 1,538 |
| MOOSEHORN CREEK | Maine | Poor | 1935 | 91 | 1,716 |
| LITTLE OSSIPEE RIVER | Maine | Fair | 1935 | 91 | 460 |
| MEGUNTICOOK RIVER | Maine | Poor | 1935 | 91 | 1,920 |
| S BRANCH MEDUXNEKEAG RIV | Maine | Poor | 1936 | 90 | 60 |
| MACHIAS RIVER (S CHAN) | Maine | Poor | 1936 | 90 | 800 |
| ST GEORGE RIVER | Maine | Fair | 1936 | 90 | 1,570 |
| LITTLE RIVER | Maine | Poor | 1936 | 90 | 412 |
| CROSS COVE | Maine | Poor | 1936 | 90 | 2,861 |
| OTTER STREAM | Maine | Fair | 1936 | 90 | 1,722 |
| LEARY BROOK | Maine | Poor | 1936 | 90 | 52 |
| ANDROSCOGGIN RIVER | Maine | Poor | 1936 | 90 | 7,203 |
| MILL(POLLY CLARK) CREEK | Maine | Fair | 1936 | 90 | 1,751 |
| KENNEBEC RIVER | Maine | Poor | 1936 | 90 | 8,829 |
| GILMAN STREAM | Maine | Fair | 1936 | 90 | 243 |
| M C RR | Maine | Poor | 1936 | 90 | 12,879 |
| B & A RR | Maine | Fair | 1936 | 90 | 560 |
| W BRANCH SHEEPSCOT RIVER | Maine | Fair | 1936 | 90 | 1,533 |
| B&A RR | Maine | Poor | 1936 | 90 | 1,010 |
| SHEEPSCOT RIVER | Maine | Poor | 1936 | 90 | 356 |
| WINSLOW STREAM | Maine | Poor | 1936 | 90 | 2,051 |
| B & A RR (NO TRACKS) | Maine | Fair | 1936 | 90 | 3,450 |
| E BRANCH SEBASTICOOK RIV | Maine | Fair | 1936 | 90 | 1,866 |
| EATON BROOK | Maine | Fair | 1936 | 90 | 7,669 |
| SEBASTICOOK RIVER | Maine | Poor | 1936 | 90 | 1,218 |
| PLEASANT RIVER | Maine | Poor | 1936 | 90 | 168 |
| PLEASANT RIVER | Maine | Poor | 1936 | 90 | 84 |
| COBBOSSEE STREAM | Maine | Fair | 1936 | 90 | 415 |
| ANDROSCOGGIN RIVER | Maine | Fair | 1936 | 90 | 12,578 |
| COBOSSEE STREAM | Maine | Fair | 1936 | 90 | 1,512 |
| ELLIS RIVER | Maine | Poor | 1936 | 90 | 702 |
| BLACK BROOK | Maine | Fair | 1936 | 90 | 702 |
| BOBBIN MILL BROOK | Maine | Fair | 1936 | 90 | 496 |
| SACO RIVER | Maine | Poor | 1936 | 90 | 4,526 |
| EASTERN RIVER | Maine | Poor | 1936 | 90 | 1,550 |
| CROOKED RIVER | Maine | Poor | 1936 | 90 | 60 |
| CROOKED RIVER | Maine | Poor | 1936 | 90 | 242 |
| MARSH STREAM | Maine | Fair | 1936 | 90 | 420 |
| E BRANCH NEZINSCOT RIVER | Maine | Fair | 1936 | 90 | 1,503 |
| TWITCHEL(MORGAN) BROOK | Maine | Poor | 1936 | 90 | 299 |
| TWITCHEL(MORGAN) BROOK | Maine | Fair | 1936 | 90 | 289 |
| LITTLE ANDROSCOGGIN RIV | Maine | Poor | 1936 | 90 | 677 |
| INDIAN STREAM | Maine | Fair | 1936 | 90 | 1,202 |
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.