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 |
|---|---|---|---|---|---|
| GILBERT AVE | Connecticut | Fair | 1949 | 77 | 77,800 |
| WILMOT BROOK | Connecticut | Fair | 1949 | 77 | 77,800 |
| LANE STREET | Connecticut | Fair | 1949 | 77 | 79,800 |
| ROUTE 15 | Connecticut | Good | 1949 | 77 | 8,600 |
| ROUTE 15 | Connecticut | Fair | 1949 | 77 | 3,800 |
| EAST MAIN STREET | Connecticut | Fair | 1949 | 77 | 6,100 |
| WHITING RIVER | Connecticut | Fair | 1949 | 77 | 5,400 |
| STILL RIVER | Connecticut | Poor | 1949 | 77 | 18,500 |
| HORSE TAVERN BROOK | Connecticut | Good | 1949 | 77 | 8,400 |
| TUMBLE BROOK | Connecticut | Fair | 1949 | 77 | 9,300 |
| SCANTIC RIVER | Connecticut | Fair | 1949 | 77 | 5,400 |
| GREEN FALLS RIVER | Connecticut | Good | 1949 | 77 | 1,500 |
| WILMOT BROOK | Connecticut | Fair | 1949 | 77 | 4,200 |
| BISSELL BROOK | Connecticut | Fair | 1949 | 77 | 1,800 |
| SCANTIC RIVER | Connecticut | Fair | 1949 | 77 | 654 |
| WEST RIVER | Connecticut | Poor | 1950 | 76 | 17,600 |
| GRISWOLD STREET | Connecticut | Fair | 1950 | 76 | 74,400 |
| SALMON BROOK | Connecticut | Fair | 1950 | 76 | 65,900 |
| ROUTE 17 | Connecticut | Fair | 1950 | 76 | 17,900 |
| DNBY TERM/HOUSATONIC RR | Connecticut | Fair | 1950 | 76 | 7,100 |
| SNAKE MEADOW BROOK | Connecticut | Good | 1950 | 76 | 7,500 |
| LONG HILL AVENUE | Connecticut | Good | 1950 | 76 | 66,000 |
| ROUTE 8 | Connecticut | Fair | 1950 | 76 | 5,463 |
| ROUTE 8 | Connecticut | Fair | 1950 | 76 | 5,000 |
| HOUSATONIC RAILROAD | Connecticut | Fair | 1950 | 76 | 73,500 |
| P&W RAILROAD & UNION ST | Connecticut | Poor | 1950 | 76 | 55,700 |
| SHEPAUG RIVER | Connecticut | Fair | 1950 | 76 | 4,200 |
| HOLLENBECK RIVER | Connecticut | Fair | 1950 | 76 | 2,900 |
| LITTLE RIVER | Connecticut | Fair | 1950 | 76 | 19,400 |
| LITTLE RIVER | Connecticut | Fair | 1950 | 76 | 17,200 |
| EDSON BROOK | Connecticut | Good | 1950 | 76 | 7,400 |
| ABANDONED RAILROAD | Connecticut | Fair | 1950 | 76 | 1,600 |
| CONNECTICUT SOUTHERN RR | Connecticut | Fair | 1950 | 76 | 108,100 |
| STREAMING GROUND BROOK | Connecticut | Fair | 1950 | 76 | 60,200 |
| WILMOT BROOK | Connecticut | Good | 1950 | 76 | 5,200 |
| NOROTON RIVER | Connecticut | Fair | 1950 | 76 | 8,650 |
| STONY BROOK | Connecticut | Fair | 1950 | 76 | 6,870 |
| ASH CREEK | Connecticut | Poor | 1950 | 76 | 12,090 |
| QUINNIPIAC RIVER | Connecticut | Fair | 1950 | 76 | 2,200 |
| PATTACONK BROOK | Connecticut | Fair | 1950 | 76 | 150 |
| MOUNT HOPE RIVER | Connecticut | Poor | 1950 | 76 | 430 |
| FENTON RIVER | Connecticut | Fair | 1950 | 76 | 682 |
| DICKINSON CREEK | Connecticut | Fair | 1950 | 76 | 200 |
| CANAL | Connecticut | Fair | 1950 | 76 | 5,775 |
| QUANDUCK BROOK | Connecticut | Good | 1950 | 76 | 528 |
| MOOSUP RIVER | Connecticut | Good | 1950 | 76 | 780 |
| WILLIMANTIC RIVER | Connecticut | Fair | 1950 | 76 | 629 |
| ROARING BROOK | Connecticut | Good | 1950 | 76 | 252 |
| EAST RIVER | Connecticut | Poor | 1950 | 76 | 3,000 |
| MILL RIVER | Connecticut | Fair | 1950 | 76 | 2,800 |
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.