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.

Clear
Bridge State Condition Year Built Age (Years) ADT
NORTHFIELD BROOK Connecticut Fair 1946 80 30
ROUTE 15 Connecticut Fair 1946 80 5,000
ROUTE 15 Connecticut Fair 1946 80 7,500
ROUTE 15 Connecticut Fair 1947 79 4,000
ROUTE 15 Connecticut Fair 1947 79 14,800
ROUTE 15 Connecticut Fair 1947 79 3,289
TOELLES ROAD Connecticut Good 1947 79 68,200
QUINNIPIAC STREET Connecticut Fair 1947 79 63,700
ROUTE 15 Connecticut Fair 1947 79 12,200
AMTRAK RAILROAD Connecticut Fair 1947 79 65,800
ROUTE 15 Connecticut Fair 1947 79 6,000
WILLIMANTIC RIVER Connecticut Fair 1947 79 4,600
NEW ENGLAND CENTRAL RR Connecticut Poor 1947 79 4,600
MORGAN BROOK Connecticut Fair 1947 79 13,900
ASPETUCK RIVER Connecticut Good 1947 79 5,900
PEQUABUCK RIVER Connecticut Fair 1947 79 11,900
MORGAN BROOK Connecticut Fair 1947 79 5,400
SR 598 Connecticut Fair 1947 79 2,600
HAMMOCK RIVER Connecticut Fair 1947 79 2,200
SALMON BROOK Connecticut Fair 1947 79 6,730
SHETUCKET RIVER Connecticut Fair 1947 79 1,700
STILL RIVER Connecticut Poor 1947 79 246
TURNEY CREEK Connecticut Fair 1947 79 3,560
MUDDY RIVER Connecticut Fair 1947 79 10,800
LYME STREET Connecticut Fair 1948 78 69,600
MERRICK BROOK AND TRAIL Connecticut Good 1948 78 8,600
QUINNIPIAC RIVER Connecticut Fair 1948 78 10,600
ROUTE 10 Connecticut Fair 1948 78 67,800
ROUTE 243 Connecticut Fair 1948 78 102,800
ROUTE 63 Connecticut Fair 1948 78 68,300
CIRCULAR AVENUE Connecticut Fair 1948 78 77,800
CONNOLLY PKWY Connecticut Fair 1948 78 69,700
ROUTE 15 Connecticut Fair 1948 78 13,400
BARTLETT BROOK Connecticut Good 1948 78 2,700
MILL RIVER Connecticut Fair 1948 78 18,600
BYRAM RIVER Connecticut Fair 1948 78 12,160
NOROTON RIVER Connecticut Fair 1948 78 4,795
MACEDONIA BROOK Connecticut Fair 1948 78 318
SANDY BROOK Connecticut Fair 1948 78 673
LIEUTENANT RIVER Connecticut Fair 1948 78 59,000
LITTLE RIVER Connecticut Good 1949 77 6,400
HAMILTON PARK ROAD Connecticut Good 1949 77 19,400
WEPAWAUG RIVER Connecticut Fair 1949 77 68,300
ROUTE 15 Connecticut Fair 1949 77 10,000
ROUTE 15 Connecticut Fair 1949 77 1,700
ROUTE 69 & WEST RIVER Connecticut Fair 1949 77 58,500
WINTERGREEN AVE & BROOK Connecticut Fair 1949 77 39,400
WINTERGREEN AVE & BROOK Connecticut Fair 1949 77 39,960
ROUTE 15 Connecticut Fair 1949 77 6,000
ROUTE 15 Connecticut Fair 1949 77 1,400

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.