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 |
|---|---|---|---|---|---|
| SACO RIVER | Maine | Poor | 1936 | 90 | 1,850 |
| WESSERUNSETT STREAM | Maine | Poor | 1936 | 90 | 170 |
| ST.GEORGE RIVER | Maine | Fair | 1936 | 90 | 520 |
| WORTHLEY BROOK | Maine | Poor | 1936 | 90 | 423 |
| MARTIN STREAM | Maine | Fair | 1936 | 90 | 4,004 |
| MARTIN STREAM | Maine | Fair | 1936 | 90 | 6,892 |
| ABAGADASSET RIVER | Maine | Poor | 1936 | 90 | 819 |
| COLD RIVER | Maine | Fair | 1936 | 90 | 186 |
| CARRABASSET STR | Maine | Poor | 1936 | 90 | 52 |
| MILLINOCKET STREAM | Maine | Poor | 1937 | 89 | 1,548 |
| B & M RR | Maine | Fair | 1937 | 89 | 14,512 |
| MILL STREAM | Maine | Fair | 1937 | 89 | 697 |
| LOWER SHIN POND INLET | Maine | Fair | 1937 | 89 | 502 |
| WILSON STREAM | Maine | Fair | 1937 | 89 | 31 |
| BLACK STREAM | Maine | Fair | 1937 | 89 | 625 |
| WILSON STREAM | Maine | Poor | 1937 | 89 | 6,000 |
| PAINE BROOK | Maine | Fair | 1937 | 89 | 1,297 |
| VALLEY STREAM | Maine | Poor | 1937 | 89 | 788 |
| FRENCH STREAM | Maine | Fair | 1937 | 89 | 779 |
| MILL STREAM | Maine | Fair | 1937 | 89 | 1,747 |
| STUBBS BROOK | Maine | Fair | 1937 | 89 | 671 |
| COLLEGE SWAMP | Maine | Poor | 1937 | 89 | 712 |
| HEALD STREAM | Maine | Fair | 1937 | 89 | 190 |
| BLACK STREAM | Maine | Poor | 1937 | 89 | 738 |
| FORE RIVER | Maine | Fair | 1937 | 89 | 24,598 |
| MEDOMAK RIVER | Maine | Fair | 1937 | 89 | 530 |
| CROOKED RIVER | Maine | Fair | 1937 | 89 | 1,367 |
| MCRR | Maine | Fair | 1937 | 89 | 6,209 |
| CHAPMAN BROOK | Maine | Poor | 1937 | 89 | 93 |
| TANNERY BROOK | Maine | Poor | 1937 | 89 | 688 |
| SWIFT CAMBRIDGE RIVER | Maine | Fair | 1937 | 89 | 820 |
| PASSADUMKEAG STR | Maine | Good | 1937 | 89 | 28 |
| ANDREWS BROOK | Maine | Fair | 1938 | 88 | 722 |
| PISCATAQUA RIVER | Maine | Poor | 1938 | 88 | 10,523 |
| WILSON STREAM | Maine | Fair | 1938 | 88 | 649 |
| MARTIN STREAM | Maine | Fair | 1938 | 88 | 4,835 |
| COMBOLASSE STREAM | Maine | Fair | 1938 | 88 | 527 |
| OUTLET OF WOODBURY POND | Maine | Poor | 1938 | 88 | 1,640 |
| QUAKER BROOK | Maine | Poor | 1938 | 88 | 4,700 |
| PENNESSEWASSEE OUTLET | Maine | Good | 1938 | 88 | 17,709 |
| LITTLE ANDRO RIVER | Maine | Fair | 1938 | 88 | 8,333 |
| WEST BR. CONCORD RIVER | Maine | Fair | 1938 | 88 | 155 |
| BIG MUSQUASH STREAM | Maine | Fair | 1938 | 88 | 973 |
| PASSADUMKEAG RIVER | Maine | Fair | 1938 | 88 | 233 |
| HIGH WATER CHAN PEN RIV | Maine | Poor | 1938 | 88 | 3,923 |
| STUBBS BROOK | Maine | Fair | 1938 | 88 | 1,263 |
| BICKNELL BROOK | Maine | Fair | 1938 | 88 | 753 |
| ANDREWS BROOK | Maine | Fair | 1938 | 88 | 1,099 |
| LITTLE COLD RIVER | Maine | Fair | 1938 | 88 | 670 |
| FERGUSON STREAM | Maine | Poor | 1938 | 88 | 335 |
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.