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 |
|---|---|---|---|---|---|
| ST. GEORGE RIVER | Maine | Fair | 1930 | 96 | 683 |
| MCRR BRANCH | Maine | Poor | 1930 | 96 | 3,700 |
| WAPSACONHAGAN | Maine | Fair | 1930 | 96 | 1,936 |
| ANDROSCOGGIN RIVER | Maine | Poor | 1931 | 95 | 16,790 |
| MILL CREEK | Maine | Fair | 1931 | 95 | 5,457 |
| MILL CANAL | Maine | Poor | 1931 | 95 | 7,854 |
| SEBEC RIVER | Maine | Poor | 1931 | 95 | 6,037 |
| CARLTON (TROUT) BROOK | Maine | Fair | 1931 | 95 | 987 |
| COLD STREAM | Maine | Fair | 1931 | 95 | 4,271 |
| MILL POND STREAM | Maine | Fair | 1931 | 95 | 4,921 |
| KENDUSKEAG STREAM | Maine | Fair | 1931 | 95 | 4,257 |
| WHITTEN STREAM (NORTH) | Maine | Poor | 1931 | 95 | 1,867 |
| E BR WESSERUNSETT STREAM | Maine | Fair | 1931 | 95 | 2,336 |
| HARRINGTON RIVER | Maine | Poor | 1931 | 95 | 421 |
| MEGUNTICOOK RIVER | Maine | Poor | 1931 | 95 | 11,473 |
| SEBASTICOOK RIVER | Maine | Fair | 1931 | 95 | 4,286 |
| MARSH BROOK | Maine | Fair | 1931 | 95 | 3,767 |
| 15 MILE STREAM | Maine | Poor | 1931 | 95 | 143 |
| McGurdy Stream | Maine | Poor | 1931 | 95 | 1,038 |
| MEDOMAK RIVER | Maine | Fair | 1931 | 95 | 4,890 |
| MONTSWEAG BROOK | Maine | Fair | 1931 | 95 | 16,559 |
| SWIFT RIVER | Maine | Poor | 1931 | 95 | 423 |
| WEBB RIVER | Maine | Fair | 1931 | 95 | 1,228 |
| LOVEJOY POND OUTLET | Maine | Fair | 1931 | 95 | 540 |
| W BR MATTAWAMKEAG RIVER | Maine | Fair | 1931 | 95 | 200 |
| E BRANCH PISCATAQUIS R | Maine | Poor | 1931 | 95 | 308 |
| PISCATAQUIS RIVER | Maine | Fair | 1931 | 95 | 543 |
| VALLEY BRK | Maine | Fair | 1931 | 95 | 2,325 |
| KENDUSKEAG STREAM | Maine | Fair | 1931 | 95 | 4,257 |
| MAINE CENTRAL RAILROAD | Maine | Fair | 1932 | 94 | 2,507 |
| DAVIS STREAM | Maine | Fair | 1932 | 94 | 4,410 |
| COOKS BROOK | Maine | Fair | 1932 | 94 | 4,258 |
| LITTLE RIVER | Maine | Fair | 1932 | 94 | 15,590 |
| KENNEBUNK RIVER | Maine | Poor | 1932 | 94 | 4,490 |
| PHELPS BROOK | Maine | Fair | 1932 | 94 | 134 |
| LITTLE ANDROSCOGGIN | Maine | Fair | 1932 | 94 | 10,953 |
| JOHNSON BROOK | Maine | Poor | 1932 | 94 | 2,161 |
| MESSALONSKEE STR | Maine | Fair | 1932 | 94 | 1,968 |
| MATTANAWCOOK STREAM | Maine | Fair | 1932 | 94 | 11,531 |
| MOLUNKUS STREAM | Maine | Poor | 1932 | 94 | 802 |
| BEAR RIVER | Maine | Fair | 1932 | 94 | 846 |
| CARRABASSET RIVER | Maine | Fair | 1932 | 94 | 4,581 |
| SUCKER MILL POND | Maine | Fair | 1932 | 94 | 735 |
| WEBSTER MILL POND | Maine | Poor | 1932 | 94 | 2,080 |
| LITTLE ANDROSCOGGIN | Maine | Fair | 1932 | 94 | 7,792 |
| PASSAGASSAWAUKEAG RV | Maine | Fair | 1932 | 94 | 4,612 |
| WYTOPITLOCK STREAM | Maine | Fair | 1932 | 94 | 384 |
| COLD RIVER | Maine | Poor | 1932 | 94 | 240 |
| MEDOMAK RIVER | Maine | Fair | 1932 | 94 | 13,870 |
| MICHAEL BROOK | Maine | Poor | 1932 | 94 | 200 |
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.