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
TROLLEY CAR TUNNEL Illinois Poor 1911 115 4,750
TROLLEY CAR TUNNEL Illinois Fair 1911 115 18,600
N FORK SALT CREEK Illinois Poor 1911 115 25
SPRING CREEK Illinois Poor 1911 115 50
SPRING CREEK Illinois Poor 1911 115 575
SPRING CREEK Illinois Poor 1911 115 400
E Trib to Shoal Crk Illinois Fair 1912 114 600
STREAM Illinois Good 1912 114 500
IROQUOIS RIVER Illinois Fair 1912 114 200
RAVINE Illinois Poor 1912 114 525
MILL RACE Illinois Fair 1912 114 3,450
SPRING CREEK Illinois Poor 1912 114 3,100
N BR CHICAGO RIVER Illinois Poor 1913 113 17,100
S BR CHICAGO RIV Illinois Poor 1913 113 9,600
N BR CHICAGO RIVER Illinois Fair 1913 113 1,050
N BR CHICAGO RIV Illinois Poor 1913 113 3,250
UNION STATION TRACKS Illinois Poor 1913 113 9,600
RAVINE Illinois Poor 1913 113 475
WAUKEGAN RIVER Illinois Poor 1913 113 1,700
MILLER BRANCH Illinois Poor 1914 112 50
ELM CREEK Illinois Fair 1914 112 900
LIMESTONE CREEK Illinois Fair 1914 112 75
EMBARRAS RIVER Illinois Poor 1914 112 50
N BR CHICAGO RIVER Illinois Poor 1914 112 19,900
CALUMET RIVER Illinois Poor 1914 112 11,200
N BR CHICAGO RIVER Illinois Fair 1914 112 12,900
CREEK Illinois Fair 1914 112 50
BRANCH OF TILTON CR. Illinois Poor 1914 112 25
SPRING CR. TRIB. Illinois Poor 1914 112 200
MUD CR Illinois Poor 1914 112 25
STREAM Illinois Poor 1914 112 50
KANKAKEE RIVER Illinois Fair 1914 112 2,900
MORGAN CREEK Illinois Fair 1914 112 4,800
RAVINE Illinois Fair 1914 112 175
RAVINE Illinois Poor 1914 112 175
HICKORY CREEK Illinois Fair 1914 112 75
INDIAN CRK. Illinois Fair 1914 112 75
DITCH Illinois Fair 1914 112 1,150
MIDDLE FORK SALINE R Illinois Fair 1914 112 2,900
BRUSH CREEK Illinois Poor 1914 112 200
HOLMAN CRK. Illinois Fair 1915 111 100
AVERY BRANCH Illinois Fair 1915 111 10
MCCURDY BRANCH Illinois Poor 1915 111 50
W. BUREAU CREEK Illinois Poor 1915 111 25
LIME CREEK Illinois Fair 1915 111 75
Masters Fork Illinois Poor 1915 111 25
BRUSHY BRANCH Illinois Poor 1915 111 1,300
DURBIN BRANCH Illinois Fair 1915 111 100
LOWIS BRANCH Illinois Fair 1915 111 20
GEORGE BRANCH Illinois Poor 1915 111 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.