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 |
|---|---|---|---|---|---|
| SHEEPSCOT RIVER | Maine | Fair | 1948 | 78 | 623 |
| TEMPLE STREAM | Maine | Poor | 1948 | 78 | 978 |
| ROYAL RIVER | Maine | Fair | 1948 | 78 | 826 |
| MARSH STREAM | Maine | Fair | 1948 | 78 | 1,209 |
| MILL STREAM | Maine | Fair | 1948 | 78 | 1,050 |
| TROUT BROOK | Maine | Fair | 1948 | 78 | 74 |
| LITTLE NORRIDGEWOCK STR | Maine | Fair | 1948 | 78 | 688 |
| MATTAGODUS STREAM | Maine | Poor | 1948 | 78 | 390 |
| SANDY STREAM | Maine | Fair | 1948 | 78 | 3,572 |
| ROUTE US 1 NB & SB | Maine | Poor | 1948 | 78 | 2,214 |
| DEAD RIVER | Maine | Fair | 1949 | 77 | 145 |
| BOG BK | Maine | Fair | 1949 | 77 | 145 |
| JEROME BROOK | Maine | Fair | 1949 | 77 | 145 |
| POND STREAM | Maine | Poor | 1949 | 77 | 145 |
| STILLWATER RIVER | Maine | Fair | 1949 | 77 | 15,860 |
| LAKE WASSOOKEAG | Maine | Fair | 1949 | 77 | 3,916 |
| LITTLE ANDROSCOGGIN RIVE | Maine | Fair | 1949 | 77 | 10,554 |
| OTTER STREAM | Maine | Fair | 1949 | 77 | 1,167 |
| MOLUNKUS STREAM | Maine | Fair | 1949 | 77 | 1,830 |
| GOOSE FALLS(TIDAL ESTU) | Maine | Poor | 1949 | 77 | 44 |
| DAVIS BROOK | Maine | Fair | 1949 | 77 | 44 |
| DYER CREEK | Maine | Fair | 1949 | 77 | 547 |
| CROOKED RIVER | Maine | Fair | 1949 | 77 | 860 |
| ALDER STREAM | Maine | Fair | 1949 | 77 | 632 |
| ABAGADASSET RIVER | Maine | Poor | 1949 | 77 | 366 |
| CHARZEE STR (THOMPSON BK | Maine | Fair | 1949 | 77 | 492 |
| FISH RIVER | Maine | Poor | 1949 | 77 | 1,140 |
| CHANDLER RIVER | Maine | Fair | 1949 | 77 | 228 |
| WILLET STREAM | Maine | Fair | 1949 | 77 | 1,817 |
| DAVIS STREAM | Maine | Poor | 1949 | 77 | 50 |
| SHEEPSCOT RIVER | Maine | Fair | 1949 | 77 | 528 |
| LIMESTONE STREAM | Maine | Fair | 1949 | 77 | 156 |
| BEAN BROOK | Maine | Fair | 1949 | 77 | 370 |
| TRACY BROOK | Maine | Fair | 1949 | 77 | 1,179 |
| CROOKED RIVER | Maine | Good | 1949 | 77 | 2,254 |
| CROOKED RIVER | Maine | Fair | 1949 | 77 | 619 |
| MOOSE BROOK | Maine | Fair | 1949 | 77 | 310 |
| KENNEBEC RIVER + MCRR | Maine | Fair | 1949 | 77 | 20,252 |
| N. BRANCH MARSH STREAM | Maine | Fair | 1949 | 77 | 1,292 |
| MOOSE BROOK | Maine | Poor | 1949 | 77 | 420 |
| SEVEN MILE STREAM | Maine | Fair | 1949 | 77 | 188 |
| KINGSLEY | Maine | Fair | 1949 | 77 | 230 |
| PANTHER RUN | Maine | Fair | 1949 | 77 | 1,187 |
| MDOT RR | Maine | Fair | 1949 | 77 | 1,990 |
| WILSON STREAM | Maine | Fair | 1950 | 76 | 140 |
| MCGURDY STREAM | Maine | Poor | 1950 | 76 | 127 |
| MESSALONSKEE STR | Maine | Poor | 1950 | 76 | 767 |
| TIDEWATER | Maine | Fair | 1950 | 76 | 128 |
| SWETT BROOK | Maine | Fair | 1950 | 76 | 618 |
| CROOKED RIVER | Maine | Poor | 1950 | 76 | 31 |
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.