Historic Bridges in Connecticut
860 bridges built before 1951 in Connecticut still in service today.
Bridges Built Before 1951
The United States has 860 bridges in Connecticut 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 |
|---|---|---|---|---|---|
| PATTACONK BROOK | Connecticut | Good | 1939 | 87 | 5,000 |
| KNOWLTON BROOK | Connecticut | Good | 1939 | 87 | 4,500 |
| BIBLE ROCK BROOK | Connecticut | Fair | 1939 | 87 | 17,500 |
| LEADMINE BROOK | Connecticut | Fair | 1939 | 87 | 50 |
| MOOSUP RIVER | Connecticut | Fair | 1940 | 86 | 2,600 |
| ROUTE 15 | Connecticut | Good | 1940 | 86 | 1,800 |
| ROUTE 15 | Connecticut | Fair | 1940 | 86 | 1,865 |
| ROUTE 15 | Connecticut | Fair | 1940 | 86 | 1,061 |
| HILLSIDE ROAD | Connecticut | Fair | 1940 | 86 | 65,700 |
| CRICKER BROOK | Connecticut | Fair | 1940 | 86 | 59,220 |
| ROUTE 15 | Connecticut | Fair | 1940 | 86 | 3,500 |
| UNITY ROAD | Connecticut | Fair | 1940 | 86 | 86,100 |
| HUNTINGTON ROAD | Connecticut | Fair | 1940 | 86 | 80,000 |
| CUTSPRING ROAD | Connecticut | Fair | 1940 | 86 | 119,800 |
| ROUTE 15 | Connecticut | Fair | 1940 | 86 | 2,870 |
| ROUTE 110 | Connecticut | Fair | 1940 | 86 | 83,800 |
| SR 796 | Connecticut | Fair | 1940 | 86 | 73,300 |
| MASHAPAUG POND | Connecticut | Fair | 1940 | 86 | 23,800 |
| W BRNCH FARMINGTON RIVER | Connecticut | Fair | 1940 | 86 | 1,700 |
| HUBBARD BROOK | Connecticut | Fair | 1940 | 86 | 450 |
| SALMON BROOK | Connecticut | Good | 1940 | 86 | 11,600 |
| SMITH COVE | Connecticut | Fair | 1940 | 86 | 16,100 |
| OBWEBETUCK BROOK | Connecticut | Fair | 1940 | 86 | 8,800 |
| NORWALK RIVER & MNRR | Connecticut | Fair | 1940 | 86 | 12,100 |
| INDIAN MEADOW BROOK | Connecticut | Fair | 1940 | 86 | 6,200 |
| POLAND RIVER | Connecticut | Fair | 1940 | 86 | 3,200 |
| ROARING BROOK | Connecticut | Fair | 1940 | 86 | 5,700 |
| FIVE MILE RIVER | Connecticut | Fair | 1940 | 86 | 11,300 |
| MEADOW STREET | Connecticut | Fair | 1940 | 86 | 5,900 |
| AMTRAK RAILROAD | Connecticut | Fair | 1940 | 86 | 12,100 |
| RAYMOND BROOK | Connecticut | Fair | 1940 | 86 | 3,000 |
| SAVILLE DAM SPILLWAY | Connecticut | Fair | 1940 | 86 | 5,300 |
| HANCOCK BROOK | Connecticut | Fair | 1940 | 86 | 24,900 |
| QUINNIPIAC RIVER | Connecticut | Fair | 1940 | 86 | 5,500 |
| AMTRAK RAILROAD | Connecticut | Good | 1940 | 86 | 3,200 |
| AMTRAK RR & LOCAL ROADS | Connecticut | Poor | 1940 | 86 | 4,200 |
| MILL RIVER | Connecticut | Poor | 1940 | 86 | 2,900 |
| ROUTE 32 RIVER ROAD | Connecticut | Fair | 1940 | 86 | 47,700 |
| ROARING BROOK | Connecticut | Fair | 1940 | 86 | 54,200 |
| BROAD BROOK | Connecticut | Fair | 1940 | 86 | 902 |
| ROARING BROOK | Connecticut | Good | 1940 | 86 | 1,433 |
| CORY BROOK | Connecticut | Fair | 1940 | 86 | 414 |
| SUSQUETONSCUT BROOK | Connecticut | Fair | 1940 | 86 | 214 |
| LATIMER BROOK | Connecticut | Fair | 1940 | 86 | 347 |
| CADY BROOK | Connecticut | Fair | 1940 | 86 | 1,398 |
| CADY BROOK | Connecticut | Poor | 1940 | 86 | 238 |
| MERRICK BROOK | Connecticut | Fair | 1940 | 86 | 480 |
| EDSON BROOK | Connecticut | Fair | 1940 | 86 | 385 |
| QUANDUCK BROOK | Connecticut | Good | 1940 | 86 | 499 |
| ANGUILLA BROOK | Connecticut | Fair | 1940 | 86 | 550 |
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.