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
METRO NORTH RAILROAD Connecticut Fair 1900 126 1,853
METRO-NORTH RAILROAD Connecticut Fair 1900 126 3,100
METRO-NORTH RAILROAD Connecticut Fair 1900 126 1,058
RIPPOWAM RIVER Connecticut Fair 1900 126 7,750
PRIVATE ROAD Connecticut Fair 1900 126 14,100
MILL RIVER Connecticut Fair 1900 126 1,365
PEQUABUCK RIVER Connecticut Good 1900 126 12,415
PEQUABUCK RIVER Connecticut Poor 1900 126 2,805
COGINCHAUG RIVER Connecticut Fair 1900 126 1,654
MISERY BROOK Connecticut Fair 1900 126 5,826
HOCKANUM RIVER Connecticut Fair 1900 126 1,655
ROCKLEDGE BROOK Connecticut Fair 1900 126 380
LITTLE RIVER Connecticut Poor 1900 126 1,178
NATCHAUG RIVER Connecticut Fair 1900 126 398
TEN MILE RIVER Connecticut Good 1900 126 180
HOP RIVER Connecticut Good 1900 126 1,500
IRON STREAM Connecticut Fair 1900 126 258
NONEWAUG RIVER Connecticut Fair 1900 126 318
MASHAMOQUET BROOK Connecticut Fair 1900 126 118
METRO NORTH RAILROAD Connecticut Fair 1900 126 10,800
BROAD BROOK Connecticut Fair 1900 126 148
METRO NORTH RAILROAD Connecticut Fair 1900 126 3,400
METRO NORTH RAILROAD Connecticut Fair 1900 126 4,700
MASHAMOQUET BROOK Connecticut Good 1900 126 132
MASHAMOQUET BROOK Connecticut Poor 1900 126 371
CHERRY BROOK Connecticut Fair 1900 126 224
WILLIMANTIC RIVER Connecticut Fair 1900 126 527
WEST BRANCH TROUT BROOK Connecticut Fair 1901 125 15,660
METRO NORTH RAILROAD Connecticut Fair 1901 125 5,146
HOUSATONIC RAILROAD Connecticut Fair 1901 125 1,500
METRO NORTH RAILROAD Connecticut Good 1903 123 7,600
HOP BROOK Connecticut Fair 1904 122 2,600
HOCKANUM RIVER Connecticut Fair 1904 122 6,700
BIRCH MOUNTAIN BROOK Connecticut Fair 1905 121 1,200
HORSENECK BROOK Connecticut Good 1905 121 1,890
CONNECTICUT RIVER Connecticut Fair 1906 120 135,200
AMTRAK RAILROAD Connecticut Fair 1906 120 3,600
METRO NORTH RAILROAD Connecticut Fair 1906 120 3,092
MAD RIVER Connecticut Fair 1906 120 6,000
AMTRAK RAILROAD Connecticut Fair 1906 120 2,287
MAD RIVER Connecticut Good 1907 119 3,500
AMTRAK & CENTRAL NE RR Connecticut Fair 1907 119 9,200
METRO NORTH RAILROAD Connecticut Fair 1907 119 408
MIANUS RIVER Connecticut Fair 1907 119 6,580
METRO NORTH RAILROAD Connecticut Fair 1907 119 3,865
ROOSTER RIVER OVERFLOW Connecticut Fair 1907 119 7,390
MILL RIVER Connecticut Poor 1908 118 4,100
YANTIC RIVER Connecticut Fair 1908 118 465
CONN. SOUTHERN RAILROAD Connecticut Fair 1909 117 4,730
YELLOW MILL CHANNEL Connecticut Good 1910 116 20,200

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.