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
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.