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 62
FairOver: STREAM
4E,2N OF LODA, Iroquois, IL
TR 88A
FairOver: TRIB. TO LITTLE MUD
3 M W CISSNA PARK, Iroquois, IL
TR 347A
FairOver: TRIB MUD CREEK
2 MI. N 2.1 MIWGREER, Iroquois, IL
TR 352
FairOver: STREAM
.1 MI S CH 10, Iroquois, IL
TR-353B
FairOver: Creek
1N, 3.25E GREER, Iroquois, IL
TR 372
FairOver: MUD CREEK
3.5 MI NE WELLINGTON, Iroquois, IL
TR 2A
FairOver: TRIB TO SPING CR
FORD-IROQ LINE, Iroquois, IL
TR 10 B
FairOver: TRIB SPRING CR
.5 M E .25THAWVILLE, Iroquois, IL
TR 10A
FairOver: STREAM
1.25 MI NE THAWVILLE, Iroquois, IL
TR 360
FairOver: STREAM
.25 MI S CH 40, Iroquois, IL
TR 191
FairOver: DRAINAGE DITCH
3 MI W SHELDON, Iroquois, IL
TR 185
FairOver: TRIB IROQUOIS RIVER
3.25W, 5S SHELDON, Iroquois, IL
TR225
FairOver: UNNAMED STREAM
2 MI S,1.5 E.SHELDON, Iroquois, IL
TR 331A
FairOver: TRIB SUGAR CREEK
2.7MI E CH4 ON CH 20, Iroquois, IL
TR 380 A
FairOver: SUGAR CREEK
.5 M N CH 9, Iroquois, IL
TR 380A
FairOver: TRIB OF SUGAR CREEK
.5N, 1W OF STOCKLAND, Iroquois, IL
TR 448
FairOver: UNNAMED TRIB
2 MI S. CH 10, Iroquois, IL
MS 6200
FairOver: PIGEON CR
0.5 MI E. CISSNA PK, Iroquois, IL
W CONCORD PLACE
FairOver: N SHELDON S CONCORD
W CONCORD PLACE, Iroquois, IL
TR 367
FairOver: SPRING CR
.3M S-.5M E OF LODA, Iroquois, IL
TR 255A
FairOver: TRIB TO SPRING CREEK
3 Mi. E.OF THAWVILLE, Iroquois, IL
TR 2 D
FairOver: Sheldon Ditch #1
0.3 Mi S of US 24, Iroquois, IL
TR 189
FairOver: BR OF SPRING CREEK
2MI E JCT45&24, Iroquois, IL
FAS 319 CH8
FairOver: TRIB VERMILION RIVER
2.5MI N SBI116 ONCH8, Iroquois, IL
FAS 325
FairOver: SUGAR CREEK
.75 MI SW WATSEKA, Iroquois, IL
TR 366
FairOver: TRIB SUGAR CREEK
0.02 MI S CH9, Iroquois, IL
FAI-57 SB
FairOver: Sugar Creek
0.96 MI S GILMAN INT, Iroquois, IL
FAI-57 NB
FairOver: Sugar Creek
0.95 MI S GILMAN INT, Iroquois, IL
TR 343A
FairOver: STREAM
.5 MI W IND. ST LINE, Iroquois, IL
CH 9/FAS 334
FairOver: TRIB OF SUGAR CREEK
1MI NW OF STOCKLAND, Iroquois, IL
US 52
FairOver: IROQUOIS RIVER
3.31 MI N OF US 24, Iroquois, IL
ILL 49
FairOver: BR PIGEON CREEK
2.4 MI N OF ILL 9, Iroquois, IL
TR 438 A
FairOver: BEAVER CR
.5 MI N CH3, Iroquois, IL
TR 454
FairOver: TRIB TO IROQUOIS RV
2 MI E OF IROQUOIS, Iroquois, IL
CH 30
FairOver: TRIB SPRING CREEK
2 MI W ILL49, Iroquois, IL
FAS 335 CH 10
FairOver: PIGEON CREEK
0.1 MI W RTE 49, Iroquois, IL
TR 225
FairOver: TRIB TO COON CREEK
2.0 S,1 W SHELDON, Iroquois, IL
TR 251C
FairOver: SHAVETAIL CREEK
1M E OF ILL 49, Iroquois, IL
CH 42
FairOver: TRIB SPRING CREEK
2.7MI N US24, Iroquois, IL
TR 363
FairOver: PIGEON CR
.2MI E ILL 49, Iroquois, IL
CH 42
FairOver: TRIB SPRING CREEK
2.1 MI N US 24, Iroquois, IL
FAS 321 CH4 SA 4
FairOver: DRAINAGE DITCH
3.08 MI W OF I-57, Iroquois, IL
TR 117
FairOver: DRAINAGE DITCH
1.0E 2.75N WATSEKA, Iroquois, IL
TR 302
FairOver: BEAVER CREEK
1.25E 1.25N PAPINEAU, Iroquois, IL
TR 317
FairOver: STREAM
1.6E,1.6S OF MILFORD, Iroquois, IL
ILL 1/FAP 332A
FairOver: SUGAR CREEK
2.73 M S OF US 24, Iroquois, IL
US 24
FairOver: DRAINAGE DITCH
3.1 MILES E OF US 45, Iroquois, IL
US 24
FairOver: TRIB PRAIRIE CREEK
3.74 MI W OF I-57, Iroquois, IL
ILL 49
FairOver: TRIB OF SHAVEYAIL CR
3.35 MI S OF US 24, Iroquois, IL
TR 250
FairOver: N MARTINTON DITCH 2
1 MI W OF MARTINTON, Iroquois, IL
Read our methodology - how this data is sourced, computed, and verified.
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Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.