Historic Bridges in Illinois

3,065 bridges built before 1951 in Illinois still in service today.

Bridges Built Before 1951

The United States has 3,065 bridges in Illinois 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
SO BR LT MISSOURI Illinois Poor 1900 126 75
BR OF CROW CR Illinois Good 1900 126 75
SPOON RIVER Illinois Poor 1900 126 35
STREAM Illinois Fair 1900 126 75
SALT FORK TRIB Illinois Good 1900 126 400
Trib. to Big Ditch Illinois Good 1900 126 275
STREAM Illinois Poor 1900 126 100
STREAM Illinois Fair 1900 126 50
SALINE BRANCH Illinois Fair 1900 126 350
STREAM Illinois Fair 1900 126 225
BONEYARD CREEK Illinois Poor 1900 126 225
BONEYARD CREEK Illinois Fair 1900 126 5,500
BONEYARD CREEK Illinois Fair 1900 126 300
BONEYARD CREEK Illinois Fair 1900 126 3,000
STREAM Illinois Poor 1900 126 50
PHINNEY BRANCH Illinois Good 1900 126 900
CLEAR CREEK Illinois Fair 1900 126 50
CREEK Illinois Poor 1900 126 50
BUCKHART CREEK Illinois Poor 1900 126 20
DELMAN BRANCH Illinois Fair 1900 126 100
RIO BUENA VISTA Illinois Good 1900 126 350
OAK BRANCH Illinois Poor 1900 126 20
BUCKHART CREEK Illinois Poor 1900 126 20
CLEAR CREEK Illinois Poor 1900 126 35
COTTON CREEK Illinois Fair 1900 126 150
CLEAR CREEK Illinois Poor 1900 126 20
LOCUST CREEK Illinois Poor 1900 126 20
BIG GEORGE BRANCH Illinois Poor 1900 126 10
BIG GEORGE BRANCH Illinois Fair 1900 126 225
LAKE FORK Illinois Fair 1900 126 20
WILLOW CREEK Illinois Poor 1900 126 35
WILLOW BRANCH Illinois Poor 1900 126 50
SPRINGSIDE BRANCH Illinois Poor 1900 126 1,100
LAKE PANA Illinois Fair 1900 126 1,100
S. FORK SANGAMON R. Illinois Poor 1900 126 25
S. FORK SANGAMON R. Illinois Poor 1900 126 25
SPRING BRANCH Illinois Fair 1900 126 50
SKAGGS CREEK Illinois Fair 1900 126 35
CLEAR CREEK Illinois Poor 1900 126 20
DES PLAINES RIVER Illinois Fair 1900 126 10,550
SALT CREEK Illinois Fair 1900 126 26,600
WHEELING DRN DTCH Illinois Fair 1900 126 24,900
SALT CREEK Illinois Good 1900 126 25,200
BUTTERFIELD CREEK Illinois Good 1900 126 5,550
SALT CREEK Illinois Good 1900 126 15,400
26TH ST CONNECTION Illinois Poor 1900 126 100
MIDLOTHIAN CREEK Illinois Fair 1900 126 5,250
MARLEY CR Illinois Fair 1900 126 7,500
N FORK SALT CREEK Illinois Fair 1900 126 50
COON CREEK Illinois Poor 1900 126 50

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.