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
SCANTIC RIVER Connecticut Fair 1941 85 19,100
ROUTE 314 - BERLIN TNPK. Connecticut Poor 1942 84 16,000
ROUTE 99-SILAS DEANE HWY Connecticut Fair 1942 84 41,200
SALMON BROOK Connecticut Fair 1942 84 7,800
ROUTE 15 Connecticut Fair 1942 84 2,224
ROUTE 175 Connecticut Fair 1942 84 27,300
ROUTE 15 & US ROUTE 5 Connecticut Fair 1942 84 4,500
FOLLY BROOK BOULEVARD Connecticut Fair 1942 84 32,000
ROUTE 314 & WOLCOTT HILL Connecticut Fair 1942 84 34,900
P&W RR & HARTFORD AVE Connecticut Poor 1942 84 47,500
ABINGTON BROOK Connecticut Good 1942 84 6,600
BANTAM RIVER Connecticut Fair 1942 84 3,400
SPRUCE BROOK Connecticut Fair 1942 84 13,400
MATTABESSET RIVER Connecticut Fair 1942 84 9,700
FARMINGTON CANAL GREENWA Connecticut Fair 1942 84 4,800
NOD BROOK Connecticut Fair 1942 84 2,922
FARM RIVER Connecticut Fair 1942 84 3,800
HOCKANUM RIVER Connecticut Good 1942 84 6,300
MILL RIVER Connecticut Good 1943 83 72,300
MC MULLEN AVENUE Connecticut Poor 1943 83 32,000
AMTRAK RAILROAD Connecticut Fair 1943 83 10,100
MILL BROOK Connecticut Fair 1943 83 72,600
MAD RIVER Connecticut Fair 1943 83 10,100
THAMES RV RR LOCAL ROADS Connecticut Poor 1943 83 42,600
LONG SWAMP BROOK Connecticut Fair 1944 82 4,400
COMSTOCK BROOK Connecticut Fair 1944 82 745
GREAT BROOK Connecticut Fair 1945 81 12,900
MINT BROOK Connecticut Fair 1945 81 3,000
MUDDY RIVER Connecticut Good 1945 81 714
WEST BRANCH SALMON BROOK Connecticut Fair 1945 81 129
QUANDUCK BROOK Connecticut Fair 1946 80 6,100
SR 707(WHITNEY AVE.) Connecticut Fair 1946 80 67,800
SR 717 (DIXWELL AVE) Connecticut Fair 1946 80 68,600
QUINNIPIAC RIVER Connecticut Poor 1946 80 33,700
QUINNIPIAC RIVER Connecticut Fair 1946 80 35,800
ROUTE 68 Connecticut Fair 1946 80 65,800
MILLER AVENUE Connecticut Fair 1946 80 71,100
ROUTE 15 Connecticut Fair 1946 80 3,200
BALDWINS POND Connecticut Fair 1946 80 24,200
WESTFIELD ROAD Connecticut Fair 1946 80 24,200
PACHAUG RIVER Connecticut Fair 1946 80 3,900
ABANDONED CANAL Connecticut Fair 1946 80 3,900
QUINNIPIAC RIVER Connecticut Good 1946 80 6,100
TOWN FARM BROOK Connecticut Fair 1946 80 5,600
SNAKE MEADOW BROOK Connecticut Good 1946 80 850
AMTRAK RAILROAD Connecticut Fair 1946 80 6,400
FARMINGTON CANAL GREENWA Connecticut Fair 1946 80 3,700
RACE BROOK Connecticut Good 1946 80 2,200
MILL RIVER Connecticut Fair 1946 80 4,386
LITTLE RIVER Connecticut Fair 1946 80 320

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.