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
MOOSUP RIVER Connecticut Good 1930 96 402
FIVE MILE RIVER Connecticut Fair 1930 96 550
HARBOR BROOK Connecticut Fair 1930 96 808
NORWALK RIVER Connecticut Fair 1930 96 155
LITTLE JACKS BROOK Connecticut Fair 1930 96 898
MILL PLAIN SWAMP Connecticut Fair 1930 96 9,080
MORGAN BROOK Connecticut Fair 1930 96 1,045
STILL RIVER Connecticut Fair 1930 96 338
FIVE MILE RIVER Connecticut Fair 1930 96 1,300
MOUNT HOPE RIVER Connecticut Fair 1930 96 2,100
MUDDY BROOK Connecticut Fair 1930 96 1,924
HARBOR BROOK Connecticut Fair 1930 96 6,700
QUINEBAUG RIVER Connecticut Fair 1930 96 8,200
PADANARAM BROOK Connecticut Fair 1930 96 4,418
STREAM Connecticut Fair 1930 96 120
OLD SHERMAN HILL ROAD Connecticut Fair 1931 95 7,400
HOUSATONIC RIVER Connecticut Good 1931 95 3,400
HOUSATONIC RAILROAD Connecticut Fair 1931 95 3,400
ROARING BROOK Connecticut Poor 1931 95 3,800
EAST ASPETUCK RIVER Connecticut Fair 1931 95 9,300
EAST ASPETUCK RIVER Connecticut Fair 1931 95 5,400
EAST ASPETUCK RIVER Connecticut Fair 1931 95 7,300
FIVE MILE RIVER Connecticut Fair 1931 95 4,700
CORY BROOK Connecticut Fair 1931 95 3,300
QUINEBAUG RIVER Connecticut Fair 1931 95 2,600
MILL RIVER Connecticut Good 1931 95 24,000
LONG MEADOW POND BROOK Connecticut Fair 1931 95 1,000
PAWCATUCK RIVER Connecticut Poor 1932 94 16,400
SALMON RIVER Connecticut Fair 1932 94 6,000
WHITE BROOK Connecticut Fair 1932 94 9,200
FARMILL RIVER Connecticut Fair 1932 94 3,250
MERRICK BROOK Connecticut Poor 1932 94
TANKERHOOSEN RIVER Connecticut Fair 1932 94 18,600
METRO NORTH RAILROAD Connecticut Poor 1933 93 14,300
GUINEA BROOK Connecticut Poor 1933 93 2,200
ROUTE 10 Connecticut Fair 1933 93 18,200
EAST ASPETUCK RIVER Connecticut Fair 1933 93 6,600
FENTON RIVER Connecticut Good 1933 93 4,000
LITTLE RIVER Connecticut Fair 1933 93 9,100
LITTLE RIVER Connecticut Fair 1933 93 9,100
JACKS BROOK Connecticut Fair 1933 93 13,900
LITTLE RIVER Connecticut Fair 1933 93 14,800
LITTLE RIVER Connecticut Fair 1933 93 13,700
LITTLE RIVER Connecticut Fair 1933 93 13,700
FULLING MILL BROOK Connecticut Fair 1933 93 12,300
FULLING MILL BROOK Connecticut Fair 1933 93 12,300
MATTABESSET RIVER Connecticut Fair 1933 93 17,100
MATTABESSET RIVER Connecticut Fair 1933 93 11,000
AMTRAK RAILROAD Connecticut Fair 1933 93 6,200
BELDEN BROOK Connecticut Fair 1933 93 2,500

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.