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 |
|---|---|---|---|---|---|
| OLAMON STREAM | Maine | Fair | 1940 | 86 | 1,845 |
| DAVEE BROOK | Maine | Poor | 1940 | 86 | 1,035 |
| SEVEN MILE STREAM | Maine | Fair | 1940 | 86 | 39 |
| FRENCHS STREAM | Maine | Fair | 1940 | 86 | 706 |
| HEMLOCK STREAM | Maine | Poor | 1940 | 86 | 267 |
| MEADOW BROOK | Maine | Poor | 1940 | 86 | 831 |
| W. BR. DEAD STREAM | Maine | Poor | 1940 | 86 | 634 |
| ONE-WAY LOOP ROAD NEAR S | Maine | Fair | 1940 | 86 | 1,214 |
| BELGRADE STREAM | Maine | Fair | 1941 | 85 | 1,521 |
| INDIAN STREAM/ PD OUTLET | Maine | Fair | 1941 | 85 | 1,737 |
| KINGSBURY STREAM | Maine | Fair | 1941 | 85 | 72 |
| CARD MILL STREAM | Maine | Fair | 1941 | 85 | 616 |
| ALLEN STREAM | Maine | Poor | 1941 | 85 | 820 |
| QUATABACOOK LAKE OUTLET | Maine | Fair | 1941 | 85 | 2,837 |
| LITTLE COLD RIVER | Maine | Fair | 1941 | 85 | 190 |
| WIGGIN STREAM | Maine | Fair | 1941 | 85 | 3,454 |
| LEMON STREAM | Maine | Fair | 1941 | 85 | 689 |
| NORTH BRANCH MARSH STREA | Maine | Fair | 1941 | 85 | 210 |
| BACK RIVER | Maine | Fair | 1941 | 85 | 2,180 |
| BLACK STREAM | Maine | Fair | 1941 | 85 | 1,523 |
| ROUND POND OUTLET | Maine | Poor | 1941 | 85 | 821 |
| HANCOCK BROOK | Maine | Fair | 1941 | 85 | 270 |
| BUZZELL BROOK | Maine | Fair | 1941 | 85 | 51 |
| CROOKED RIVER | Maine | Poor | 1941 | 85 | 2,291 |
| GREAT FARM BROOK | Maine | Poor | 1941 | 85 | 276 |
| MATTAGODUS STREAM | Maine | Poor | 1941 | 85 | 72 |
| WESSERUNSETT STREAM | Maine | Fair | 1942 | 84 | 5,922 |
| ANDROSCOGGIN RIVER CANAL | Maine | Fair | 1942 | 84 | 1,264 |
| MILL RIVER | Maine | Fair | 1942 | 84 | 3,461 |
| WESTERN LITTLE RIVER | Maine | Fair | 1942 | 84 | 63 |
| STEVERNS BROOK | Maine | Poor | 1943 | 83 | 350 |
| NE CHANNEL SACO RIVER | Maine | Fair | 1943 | 83 | 20,390 |
| ABBOT BROOK | Maine | Poor | 1943 | 83 | 268 |
| BOG BROOK | Maine | Fair | 1943 | 83 | 902 |
| MEDUXNEKEAG RIVER | Maine | Poor | 1944 | 82 | 13,721 |
| LITTLE RIVER | Maine | Poor | 1944 | 82 | 7,764 |
| LITTLE RIVER | Maine | Fair | 1944 | 82 | 631 |
| PENNAMAQUAN | Maine | Fair | 1944 | 82 | 316 |
| CROMWELL BROOK | Maine | Poor | 1945 | 81 | 489 |
| BLACKSTONE BROOK | Maine | Good | 1945 | 81 | 10 |
| SHEEPSCOT RIVER | Maine | Fair | 1945 | 81 | 41 |
| BACK CREEK | Maine | Poor | 1945 | 81 | 662 |
| SALMON FALLS RIVER | Maine | Fair | 1945 | 81 | 10,810 |
| MAIN STREAM | Maine | Fair | 1945 | 81 | 89 |
| MILL STREAM | Maine | Fair | 1945 | 81 | 287 |
| FISH STREAM | Maine | Fair | 1945 | 81 | 174 |
| KEBO BROOK | Maine | Fair | 1945 | 81 | 4,415 |
| PLEASANT POND STREAM | Maine | Poor | 1945 | 81 | 180 |
| DAMARISCOTTA LAKE OUTLET | Maine | Fair | 1945 | 81 | 1,595 |
| YORK RIVER | Maine | Fair | 1946 | 80 | 30,330 |
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.