US Bridges

Twp RD 35 over I 57

Fair

Iroquois County, Illinois · 4.27 M S Chebanse It · Structure no. 038012700000000

Built
1965
60 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
198 ft
4 main spans
Daily traffic
200
2022 count
Owner
State
State Highway Agency

About this bridge

Twp RD 35 over I 57 is a steel continuous stringer/multi-beam or girder carrying Twp RD 35 over I 57 in Iroquois County, Illinois. It was built in 1965, so it is 60 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 200 vehicles a day, roughly 26% of them trucks, projected to reach 354 by 2046. The structure is 198 ft (60.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTwp RD 35
CrossesI 57
Location4.27 M S Chebanse It
RouteCounty Highway 0
CountyIroquois County
StateIllinois
Coordinates40.94368, -87.92706
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.3 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length198 ft (60.4 m)
Longest span56 ft (17.1 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic354 by 2046
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$142,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Twp RD 35 over I 57 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Twp RD 35 over I 57 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does Twp RD 35 over I 57 carry?

About 200 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is Twp RD 35 over I 57?

The structure is 198 ft (60.4 m) long with a longest span of 56 ft (17.1 m) and a deck 30 ft wide.

Who owns Twp RD 35 over I 57?

It is owned by the State Highway Agency.