Iroquois County, IL
565 public highway bridges
Iroquois County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Iroquois County, Illinois contains 565 public highway bridges. Roughly 46% are rated “Good,” 35.8% “Fair,” and 13.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (565)
TR 36
FairOver: SPRING CREEK
0.75S 0.5E BUCKLEY, Iroquois, IL
TR 292
FairOver: DRAINAGE DITCH
3.75 MI NE BUCKLEY, Iroquois, IL
TR 2B
FairOver: STREAM
W CO LINE.75S FAS334, Iroquois, IL
TR 319A
FairOver: MUD CREEK
0.25 MI E KELLART LK, Iroquois, IL
TR 200
FairOver: SHAVETAIL CREEK
T25N R13W 2ND PM, Iroquois, IL
TR 114
FairOver: TRIB TO MUD CR
1.5W, 2N CISSNA PK, Iroquois, IL
TR 57
FairOver: LANGAN CR
0.29 MI E CH 24, Iroquois, IL
TR 58
FairOver: TRIB OF LANGAN CRK.
.75 MI N. RT. 116, Iroquois, IL
CH 15
FairOver: MARTINTON DITCH #3
2MI W .2N DONOVAN, Iroquois, IL
TR 344
FairOver: BEAVER CREEK
1.5 MI N BEAVERVILLE, Iroquois, IL
TR 368
FairOver: BEAVER CREEK
1.25N 1.25E BVILLE, Iroquois, IL
TR 19
FairOver: BEAVER CREEK
1.5N,1.75E BEAVERVLL, Iroquois, IL
TR 251
FairOver: TRIB TO COON CREEK
4E 2S OF WOODLAND, Iroquois, IL
TR 288
FairOver: COON CREEK
1.5E 1.5 SWOODLAND, Iroquois, IL
TR 5
FairOver: N BR LANGAN CR
2.5 MI W CHEBANSE, Iroquois, IL
TR 140
FairOver: LANGAN CR
2.32 MI S CHEBANSE, Iroquois, IL
TR 188
FairOver: LANGAN CR
3.5 NE LIERABLE, Iroquois, IL
TR 58
FairOver: W BR LANGAN CREEK
0.25S 4W OF CLIFTON, Iroquois, IL
TR 108
FairOver: UNNAMED DRAINAGE DT
1 S 1.75 W CHEBANSE, Iroquois, IL
TR 120
FairOver: LANGAN CREEK
2.71 MI. S. CHEBANSE, Iroquois, IL
TR 91
FairOver: PIKE CR
0.5 MI W RT 52, Iroquois, IL
TR 219
FairOver: STREAM
2.2 MI E ILL 49, Iroquois, IL
TR 243
FairOver: SHAVETAIL CR
.25M E ILL 49, Iroquois, IL
TR94A
FairOver: DRAINAGE DITCH
1 MI S 1MIE DANFORTH, Iroquois, IL
TR 89
FairOver: BRANCH OF LANGAN CR
2.5N,3.5W DANFORTH, Iroquois, IL
TR 159
FairOver: SPRING CREEK
5 MI E 1 MI N GILMAN, Iroquois, IL
TR 339
FairOver: TRIB TO PIGEON CR
.6 MI E CISSA PARK, Iroquois, IL
TR 180
FairOver: FOUNTAIN CREEK
1 MI S FOUNTAIN CR, Iroquois, IL
TR 371
FairOver: WHISKEY CREEK
2.5E RT 49 1.ON CO L, Iroquois, IL
CH 35
FairOver: SPRING CREEK
4 MI NE CRESCENTCITY, Iroquois, IL
CH 45(N)
FairOver: IROQUOIS RIVER
SEC 23 T27N R13W 2ND, Iroquois, IL
TR 137
FairOver: TRIB TO SPRING CREEK
0.5E 2N CRESCENT CTY, Iroquois, IL
TR 14A
FairOver: SPRING CREEK
2.5 MI. N. LODA, Iroquois, IL
TR 349
FairOver: SPRING CR
1.5 MI W INT 57, Iroquois, IL
TR 349
FairOver: TRIB TO SPRING CREEK
1.25 MI E US RT 45, Iroquois, IL
TR 2B
FairOver: STREAM
2.5 MI NW OF LODA, Iroquois, IL
TR186
FairOver: DRAINAGE DITCH
2MI E RTE 49 &1MIS52, Iroquois, IL
TR 55B
FairOver: MARTINTON DITCH NO 3
0.1 MI E MARTINTON, Iroquois, IL
TR 99B
FairOver: MIDDLEPORT DITCH TRI
2 MI E ILL 1, Iroquois, IL
TR 324
FairOver: TRIB TO SUGAR CK
2 MI SE MILFORD, Iroquois, IL
TR-301A
FairOver: Mud Creek
.25S, 2W MILFORD, Iroquois, IL
TR 333
FairOver: Gay Creek
3 mi. S. OF Milford, Iroquois, IL
TR 27
FairOver: DRAINAGE DITCH
3 MI S CO LINE, Iroquois, IL
TR 5
FairOver: STREAM
3E,1S NW COR OF CNTY, Iroquois, IL
TR-33
FairOver: Creek
3000N, 450E, Iroquois, IL
FAS 1320
FairOver: BEAVER CR
4 MI W OF PAPINEAU, Iroquois, IL
TR 204
FairOver: DRAINAGE DITCH
6.5 MI SW PAPINEAU, Iroquois, IL
TR 224
FairOver: DRAINAGE DITCH
4.5 M SW PAPINEAU, Iroquois, IL
TR 363
FairOver: TRIB TO PIGEON CR
1.5 MI W ILL RT 49, Iroquois, IL
TR 100
FairOver: UNNAMED TRIB
1 MI. S. CH 44, Iroquois, IL
Read our methodology - how this data is sourced, computed, and verified.
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