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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
ROOKS CR Illinois Fair 1939 87 3,400
BRAINERDS BRANCH Illinois Fair 1939 87 4,150
BRAINARDS BRANCH Illinois Fair 1939 87 4,350
KILLJORDAN CREEK Illinois Fair 1939 87 375
NIPPERSINK CR OVERFL Illinois Poor 1939 87 11,500
US 51 AT BLOOMINGTON Illinois Fair 1939 87 25,000
Union Pacific RR & Old 6 Illinois Fair 1939 87 21,300
LAKE DECATUR Illinois Poor 1939 87 775
MASSA CREEK Illinois Good 1939 87 750
E. FK. OTTER CREEK Illinois Fair 1939 87 1,150
UPRR Illinois Fair 1939 87 150
LITTLE PIASA CREEK Illinois Good 1939 87 12,100
SUGAR FORK CREEK Illinois Good 1939 87 4,450
CANTEEN CK Illinois Good 1939 87 45,600
ILL RIVER Illinois Fair 1939 87 7,000
BARNES CREEK Illinois Poor 1939 87 200
C&IM RR Illinois Fair 1939 87 2,750
GROVE CR Illinois Poor 1939 87 75
THREE MILE BRANCH Illinois Fair 1939 87 100
SENECHWINE CR Illinois Fair 1939 87 6,400
MADDEN CREEK Illinois Fair 1939 87 850
STREAM Illinois Poor 1939 87 250
STREAM Illinois Fair 1939 87 175
COFFEE CR Illinois Fair 1939 87 225
SILVER CREEK Illinois Good 1939 87 16,000
SILVER CREEK BKWATER Illinois Fair 1939 87 16,000
NS RR & IC RR Illinois Fair 1939 87 16,100
JOHNS CREEK Illinois Fair 1939 87 175
SWAMP DITCH Illinois Fair 1939 87 400
STREAM Illinois Poor 1939 87 425
FLAT BRANCH Illinois Poor 1939 87 350
LAKE FORK Illinois Fair 1939 87 325
MUD CREEK Illinois Fair 1939 87 325
BECKS CREEK Illinois Fair 1939 87 800
TRIB TO FLAT BRANCH Illinois Fair 1939 87 150
SORGHUM BRANCH Illinois Fair 1939 87 50
LAKE FORK BRANCH Illinois Fair 1939 87 50
STREAM Illinois Poor 1939 87 50
STREAM Illinois Fair 1939 87 75
FLAT BRANCH Illinois Fair 1939 87 50
SORGHUM BRANCH Illinois Fair 1939 87 75
SORGHUM BRANCH Illinois Fair 1939 87 35
STREAM Illinois Fair 1939 87 35
STREAM Illinois Poor 1939 87 50
STREAM Illinois Fair 1939 87 100
STREAM Illinois Fair 1939 87 100
STREAM Illinois Fair 1939 87 100
BR OF YELLOW CREEK Illinois Good 1939 87 525
N FORK VERMILION RIV Illinois Fair 1939 87 4,550
STREAM Illinois Fair 1939 87 4,450

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.

All Bridges Poor Condition Scour Critical Bridge Stats