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
Two Mile Slough Illinois Poor 1937 89 175
LOST CREEK Illinois Fair 1937 89 4,100
Mid Trib Flat Branch Illinois Fair 1937 89 3,250
CASSEL CREEK Illinois Fair 1937 89 2,400
S FORK INDIAN CREEK Illinois Fair 1937 89 1,150
KASKASKIA RIVER Illinois Fair 1937 89 600
DITCH Illinois Poor 1937 89 2,400
Poplar Creek Illinois Fair 1937 89 3,400
MAIN BR CHICAGO RIV Illinois Poor 1937 89 102,000
VAR CITY STS & RR Illinois Fair 1937 89 11,200
47TH ST Illinois Good 1937 89 108,400
SUGAR CREEK Illinois Poor 1937 89 20
N BR HUDSON CREEK Illinois Fair 1937 89 475
DRAINAGE DITCH Illinois Fair 1937 89 4,500
DRAINAGE DITCH Illinois Poor 1937 89 4,500
SALT CREEK Illinois Fair 1937 89 1,100
EMBARRAS RIVER Illinois Fair 1937 89 2,400
SALT CREEK Illinois Fair 1937 89 61,200
EWING CK Illinois Fair 1937 89 1,600
SUGAR CREEK Illinois Fair 1937 89 2,200
TRIB FOUNTAIN CR Illinois Fair 1937 89 125
APPLE RIVER Illinois Poor 1937 89 575
LITTLE RUSH CREEK Illinois Fair 1937 89 350
CEDAR CREEK Illinois Good 1937 89 550
FLINT CREEK TRIB Illinois Poor 1937 89 24,300
DEERPATH RD Illinois Fair 1937 89 41,000
MILL RACE Illinois Good 1937 89 3,450
GREEN RIVER Illinois Fair 1937 89 1,950
VERMILION RIVER Illinois Fair 1937 89 1,800
DRAIN DT Illinois Fair 1937 89 525
MOLE CREEK Illinois Fair 1937 89 850
PRAIRIE CREEK DITCH Illinois Fair 1937 89 2,300
PRAIRIE CREEK Illinois Fair 1937 89 2,300
SUGAR CREEK Illinois Fair 1937 89 2,200
CAMP CREEK Illinois Poor 1937 89 200
N BRANCH CROOKED CR Illinois Good 1937 89 325
S BRANCH CROOKED CR Illinois Good 1937 89 325
SANGAMON RIVER Illinois Fair 1937 89 775
ADAMS CREEK Illinois Fair 1937 89 1,750
GILLESPIE LAKE CREEK Illinois Fair 1937 89 2,350
CAHOKIA CREEK Illinois Fair 1937 89 7,950
Cahokia Creek Illinois Fair 1937 89 6,550
Mooney Creek Illinois Fair 1937 89 6,550
SOO RR. Illinois Fair 1937 89 3,400
DICKISON RUN CREEK Illinois Poor 1937 89 14,400
LAKE FORK DRAIN DIT Illinois Fair 1937 89 800
LAKE FORK DRAIN DIT Illinois Fair 1937 89 25
FANCY CREEK Illinois Fair 1937 89 4,450
STREAM Illinois Poor 1937 89 10,050
ROBINSON CREEK Illinois Fair 1937 89 225

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.