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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
SR 598 WHITEHEAD HIGHWAY Connecticut Fair 1832 194 12,900
HOUSATONIC RIVER Connecticut Fair 1841 185 1,100
HOUSATONIC RIVER Connecticut Fair 1842 184 400
RIPPOWAM RIVER Connecticut Fair 1847 179 5,700
FIVE MILE RIVER Connecticut Fair 1850 176 21,900
WHETSTONE BROOK Connecticut Fair 1850 176 110
MILL BROOK Connecticut Good 1850 176 994
WEPAWAUG RIVER Connecticut Fair 1855 171 34,600
NORWALK RIVER Connecticut Good 1860 166 13,800
NONEWAUG RIVER Connecticut Good 1860 166 394
FIVE MILE RIVER Connecticut Fair 1860 166 1,400
WILLIMANTIC RIVER Connecticut Fair 1868 158 8,300
SAUGATUCK RIVER Connecticut Poor 1870 156 12,400
MILL BROOK Connecticut Fair 1870 156 4,800
TEN MILE RIVER Connecticut Fair 1870 156 500
MIDDLE RIVER Connecticut Fair 1870 156 600
AMTRAK RAILROAD Connecticut Fair 1871 155 19,700
PORTER BROOK Connecticut Fair 1871 155 3,600
HARBOR BROOK Connecticut Poor 1871 155 6,186
SCANTIC RIVER Connecticut Fair 1880 146 5,200
FARMINGTON CANAL GREENWA Connecticut Fair 1885 141 4,400
TANKERHOOSEN RIVER Connecticut Good 1885 141 21
AMTRAK RAILROAD Connecticut Fair 1887 139 350
BYRAM RIVER Connecticut Fair 1888 138 14,570
WEPAWAUG RIVER Connecticut Fair 1889 137 14,300
AMTRAK RAILROAD Connecticut Fair 1890 136 3,500
WINTERGREEN BROOK Connecticut Fair 1890 136 2,800
AMTRAK RAILROAD Connecticut Fair 1891 135 3,500
HARBOR BROOK Connecticut Fair 1892 134 16,744
METRO-NORTH RAILROAD Connecticut Fair 1892 134 9,700
AMTRAK RAILROAD Connecticut Fair 1892 134 5,900
METRO-NORTH RAILROAD Connecticut Fair 1893 133 18,900
METRO NORTH RAILROAD Connecticut Good 1893 133 11,803
HORSENECK BROOK Connecticut Fair 1894 132 12,240
HARBOR BROOK Connecticut Fair 1895 131 2,870
FARMINGTON RIVER Connecticut Fair 1895 131 235
METRO-NORTH RAILROAD Connecticut Good 1895 131 7,900
AMTRAK RAILROAD Connecticut Fair 1899 127 5,300
PADANARAM BROOK Connecticut Fair 1899 127 10,334
SILVERMINE RIVER Connecticut Fair 1899 127 1,415
METRO NORTH RAILROAD Connecticut Fair 1900 126 7,100
METRO NORTH RAILROAD Connecticut Fair 1900 126 9,300
FARM RIVER Connecticut Fair 1900 126 5,500
WILLIMANTIC RIVER Connecticut Fair 1900 126 1,800
METRO NORTH RAILROAD Connecticut Fair 1900 126 9,000
METRO-NORTH RAILROAD Connecticut Fair 1900 126 14,800
HARBOR BROOK Connecticut Fair 1900 126 2,700
WHARTON BROOK Connecticut Fair 1900 126 4,525
FARMINGTON CANAL GREENWA Connecticut Fair 1900 126 4,200
QUINNIPIAC RIVER Connecticut Fair 1900 126 2,400

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.

All Bridges Poor Condition Scour Critical Bridge Stats