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
N FORK VERMILION RIV Illinois Fair 1940 86 4,550
CRAWFISH LATERAL Illinois Fair 1940 86 525
DRAINAGE DITCH Illinois Fair 1940 86 1,500
ELKHORN CREEK Illinois Fair 1940 86 1,200
BR LITTLE WABASH Illinois Fair 1940 86 10
DRAINAGE DITCH Illinois Fair 1940 86 500
ELKHORN CREEK Illinois Fair 1940 86 5,300
ELKHORN CREEK Illinois Fair 1940 86 5,300
ROCK RIVER Illinois Fair 1940 86 4,900
CREEK Illinois Fair 1940 86 5,100
STREAM Illinois Good 1940 86 5,300
DU PAGE RIVER Illinois Fair 1940 86 17,100
I & M CANAL Illinois Poor 1940 86 17,100
SPRING BROOK CREEK Illinois Good 1940 86 7,100
KEITH CREEK Illinois Fair 1940 86 14,700
KENT CREEK Illinois Good 1940 86 4,150
PANTHER CR Illinois Good 1940 86 25
TRIB OF WALNUT CR Illinois Fair 1940 86 275
HARKNESS CREEK Illinois Fair 1941 85 4,150
INFIDEL HOLLOW CREEK Illinois Good 1941 85 550
STREAM Illinois Fair 1941 85 225
COTTON CREEK Illinois Fair 1941 85 200
DOYLES CREEK Illinois Good 1941 85 1,100
LITTLE MUDDY CREEK Illinois Poor 1941 85 425
BRANCH OF SUGAR CK Illinois Good 1941 85 575
W BR HURRICANE CREEK Illinois Fair 1941 85 225
W BR HURRICANE CREEK Illinois Fair 1941 85 350
W F N BR CHICAGO RIV Illinois Poor 1941 85 31,700
CALUMET RIVER Illinois Fair 1941 85 10,600
RR - UP Illinois Fair 1941 85 4,950
TINLEY CREEK Illinois Fair 1941 85 4,600
BELMONT AV Illinois Poor 1941 85 101,600
BENNET CREEK Illinois Fair 1941 85 775
RANGE CREEK Illinois Fair 1941 85 475
COON CREEK Illinois Fair 1941 85 7,300
DRAINAGE DITCH Illinois Good 1941 85 75
W.BRANCH DU PAGE RV. Illinois Poor 1941 85 17,600
Stream Illinois Poor 1941 85 300
SMALL UNNAMED BRANCH Illinois Fair 1941 85 425
LITTLE CREEK Illinois Good 1941 85 900
CREEK Illinois Good 1941 85 375
BRANCH JORDAN CREEK Illinois Good 1941 85 20
BIG CREEK Illinois Fair 1941 85 10
DRAINAGE DITCH Illinois Good 1941 85 325
MACOUPIN CREEK Illinois Fair 1941 85 2,150
INDIAN CREEK Illinois Fair 1941 85 17,900
MD FK N BR CHICAGO R Illinois Fair 1941 85 23,200
BRUMBACH CREEK Illinois Fair 1941 85 5,250
TURTLE CREEK Illinois Good 1941 85 12,300
PRAIRIE CREEK Illinois Good 1941 85 25

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.