US Bridges

I-57 (nb) over FAP 323(US 36)

Good

Douglas County, Illinois · Tuscola · Structure no. 021000900000000

Built
1968
57 years old, rebuilt 2002
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
167 ft
4 main spans
Daily traffic
11,050
2023 count
Owner
State
State Highway Agency

About this bridge

I-57 (nb) over FAP 323(US 36) is a steel continuous stringer/multi-beam or girder carrying I-57 (nb) over FAP 323(US 36) in Douglas County, Illinois. It was built in 1968 and reconstructed in 2002, so it is 57 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,050 vehicles a day, roughly 41% of them trucks, projected to reach 12,575 by 2046. The structure is 167 ft (50.8 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-57 (nb)
CrossesFAP 323(US 36)
LocationTuscola
RouteInterstate 57
CountyDouglas County
StateIllinois
Coordinates39.79153, -88.2644
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating71.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length167 ft (50.8 m)
Longest span43 ft (13 m)
Deck width49 ft (14.8 m)
Roadway width45 ft (13.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,050 (2023)
Projected traffic12,575 by 2046
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-57 (nb) over FAP 323(US 36) built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2002.

What condition is I-57 (nb) over FAP 323(US 36) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does I-57 (nb) over FAP 323(US 36) carry?

About 11,050 vehicles per day (2023 count), of which roughly 41% are trucks.

How long is I-57 (nb) over FAP 323(US 36)?

The structure is 167 ft (50.8 m) long with a longest span of 43 ft (13 m) and a deck 49 ft wide.

Who owns I-57 (nb) over FAP 323(US 36)?

It is owned by the State Highway Agency.