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 |
|---|---|---|---|---|---|
| BROOK | Connecticut | Fair | 1937 | 89 | 500 |
| BROOK | Connecticut | Fair | 1937 | 89 | 500 |
| MUDDY BROOK | Connecticut | Fair | 1937 | 89 | 700 |
| QUINEBAUG RIVER | Connecticut | Fair | 1937 | 89 | 2,200 |
| FIVE MILE RIVER | Connecticut | Fair | 1937 | 89 | 68,300 |
| NEW ENGLAND CENTRAL RR | Connecticut | Good | 1937 | 89 | 8,400 |
| FRENCH RIVER | Connecticut | Poor | 1937 | 89 | 2,300 |
| PAN AM RAILROAD | Connecticut | Fair | 1937 | 89 | 4,800 |
| JORDAN COVE | Connecticut | Good | 1937 | 89 | 1,871 |
| SHETUCKET RIVER | Connecticut | Fair | 1937 | 89 | 3,200 |
| EAST ASPETUCK RIVER | Connecticut | Fair | 1937 | 89 | 4,179 |
| EAST BRANCH SALMON BROOK | Connecticut | Fair | 1937 | 89 | 2,630 |
| BRADLEY BROOK | Connecticut | Fair | 1937 | 89 | 2,630 |
| BIGELOW BROOK | Connecticut | Poor | 1937 | 89 | 200 |
| FIVE MILE RIVER | Connecticut | Fair | 1937 | 89 | 1,019 |
| WEST ASPETUCK RIVER | Connecticut | Poor | 1937 | 89 | 655 |
| BLACKBERRY RIVER | Connecticut | Good | 1937 | 89 | 498 |
| ROUTE 33 | Connecticut | Fair | 1937 | 89 | 61,100 |
| ROUTE 15 | Connecticut | Fair | 1937 | 89 | 1,817 |
| FARM RIVER | Connecticut | Fair | 1938 | 88 | 25,500 |
| SHETUCKET RIVER | Connecticut | Fair | 1938 | 88 | 12,900 |
| NEW ENGLAND CENTRAL RR | Connecticut | Fair | 1938 | 88 | 7,300 |
| CONN RIVER RTE 9 P&W RR | Connecticut | Poor | 1938 | 88 | 28,000 |
| SR 719 | Connecticut | Fair | 1938 | 88 | 25,400 |
| SR 719 | Connecticut | Fair | 1938 | 88 | 28,100 |
| ROUTE 15 | Connecticut | Fair | 1938 | 88 | 4,362 |
| ROUTE 15 | Connecticut | Fair | 1938 | 88 | 2,900 |
| ROUTE 15 | Connecticut | Fair | 1938 | 88 | 1,500 |
| SILVERMINE AVENUE | Connecticut | Fair | 1938 | 88 | 72,400 |
| NORWALK RIVER | Connecticut | Fair | 1938 | 88 | 51,000 |
| ROUTE 15 | Connecticut | Fair | 1938 | 88 | 5,000 |
| ROUTE 15 | Connecticut | Good | 1938 | 88 | 2,800 |
| ROUTE 15 | Connecticut | Fair | 1938 | 88 | 3,000 |
| SAUGATUCK RIVER | Connecticut | Fair | 1938 | 88 | 66,300 |
| ROUTE 57 | Connecticut | Fair | 1938 | 88 | 61,200 |
| ROUTE 136 | Connecticut | Fair | 1938 | 88 | 65,700 |
| CROSS HIGHWAY | Connecticut | Fair | 1938 | 88 | 56,700 |
| ROUTE 15 | Connecticut | Fair | 1938 | 88 | 650 |
| ROUTE 58 | Connecticut | Fair | 1938 | 88 | 59,300 |
| PODUNK RIVER | Connecticut | Fair | 1938 | 88 | 8,600 |
| MUDDY RIVER | Connecticut | Good | 1938 | 88 | 4,300 |
| SHETUCKET RIVER | Connecticut | Fair | 1938 | 88 | 2,000 |
| AMTRAK RAILROAD & BUSWAY | Connecticut | Fair | 1938 | 88 | 15,000 |
| BEAVER BROOK | Connecticut | Poor | 1938 | 88 | 2,800 |
| HOCKANUM RIVER | Connecticut | Fair | 1938 | 88 | 2,200 |
| HARBOR BROOK | Connecticut | Fair | 1938 | 88 | 2,700 |
| QUINNIPIAC RIVER | Connecticut | Fair | 1938 | 88 | 12,500 |
| YANTIC RIVER | Connecticut | Fair | 1938 | 88 | 8,400 |
| METRO NORTH RAILROAD | Connecticut | Fair | 1938 | 88 | 1,522 |
| PEQUABUCK RIVER | Connecticut | Poor | 1938 | 88 | 1,750 |
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.