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
MATTABESSET RIVER Connecticut Fair 1935 91 7,100
CHATFIELD HOLLOW BROOK Connecticut Fair 1935 91 4,800
FIVE MILE RIVER Connecticut Fair 1935 91 9,400
MIDDLE RIVER Connecticut Fair 1935 91 1,900
BACK RIVER Connecticut Poor 1935 91 3,000
CROOKED BROOK Connecticut Fair 1935 91 1,400
MUDDY BROOK Connecticut Fair 1935 91 10,100
CABIN BROOK Connecticut Fair 1935 91 2,100
BANTAM RIVER Connecticut Fair 1935 91 2,400
E BRANCH NAUGATUCK RIVER Connecticut Poor 1935 91 700
HOUSATONIC RAILROAD Connecticut Good 1935 91 900
CONVERSE POND BROOK Connecticut Fair 1935 91 53,800
TRANSYLVANIA BROOK Connecticut Fair 1935 91 3,900
CANAL Connecticut Fair 1935 91 10,400
RIPPOWAM RIVER Connecticut Fair 1935 91 7,470
NAUGATUCK RIVER Connecticut Fair 1935 91 1,500
LAKE WHITNEY Connecticut Poor 1935 91 2,000
COVE RIVER Connecticut Fair 1935 91 7,100
SUMNER BROOK Connecticut Poor 1935 91 1,101
MILL RIVER Connecticut Poor 1935 91 6,505
HOP RIVER Connecticut Good 1935 91 169
ROARING BROOK Connecticut Fair 1935 91 2,163
PALMER COVE Connecticut Poor 1935 91 2,025
HAMMONASSET RIVER Connecticut Good 1935 91 841
EIGHT MILE RIVER Connecticut Fair 1935 91 836
MERRICK BROOK Connecticut Fair 1935 91 590
FURNACE BROOK Connecticut Poor 1935 91 644
HAMMONASSET RIVER Connecticut Fair 1935 91 2,833
MILL RIVER Connecticut Fair 1935 91 1,125
MILL RIVER Connecticut Fair 1935 91 4,140
SASCO BROOK Connecticut Fair 1935 91 3,090
STONY BROOK Connecticut Poor 1935 91 3,820
MIANUS RIVER Connecticut Fair 1935 91 4,390
STEELE BROOK Connecticut Fair 1935 91 4,100
LOVERS LANE BROOK Connecticut Fair 1935 91 780
E BRANCH NAUGATUCK RIVER Connecticut Fair 1935 91 535
MAD RIVER Connecticut Fair 1935 91 3,340
MAD RIVER Connecticut Fair 1935 91 3,340
SUMNER BROOK Connecticut Fair 1935 91 3,433
RIVERSVILLE RD E BR BYRA Connecticut Fair 1935 91 53,800
FRENCH RIVER Connecticut Fair 1935 91 3,800
MAD RIVER Connecticut Fair 1935 91 9,700
SCANTIC RIVER Connecticut Fair 1935 91 12,700
PEQUONNOCK RIVER Connecticut Good 1935 91 64,000
HOP BROOK Connecticut Good 1935 91 30
HOUSATONIC RIVER Connecticut Fair 1936 90 3,800
ROUTE 322 Connecticut Poor 1936 90 4,600
TEN MILE RIVER Connecticut Fair 1936 90 5,500
TACONIC ROAD Connecticut Fair 1936 90 62,900
ROUTE 15 Connecticut Fair 1936 90 1,500

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.