US Bridges

I-57 (nb) over Riley Creek

Fair

Coles County, Illinois · N Il 16 · Structure no. 015000700000000

Built
1965
60 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
117 ft
3 main spans
Daily traffic
10,500
2023 count
Owner
State
State Highway Agency

About this bridge

I-57 (nb) over Riley Creek is a concrete continuous tee beam carrying I-57 (nb) over Riley Creek in Coles 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 10,500 vehicles a day, roughly 40% of them trucks, projected to reach 10,757 by 2046. The structure is 117 ft (35.7 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-57 (nb)
CrossesRiley Creek
LocationN Il 16
RouteInterstate 57
CountyColes County
StateIllinois
Coordinates39.51021, -88.31838
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length117 ft (35.7 m)
Longest span44 ft (13.4 m)
Deck width44 ft (13.3 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,500 (2023)
Projected traffic10,757 by 2046
Trucks40%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$717,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-57 (nb) over Riley Creek built?

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

What condition is I-57 (nb) over Riley Creek 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 June 2024.

How much traffic does I-57 (nb) over Riley Creek carry?

About 10,500 vehicles per day (2023 count), of which roughly 40% are trucks.

How long is I-57 (nb) over Riley Creek?

The structure is 117 ft (35.7 m) long with a longest span of 44 ft (13.4 m) and a deck 44 ft wide.

Who owns I-57 (nb) over Riley Creek?

It is owned by the State Highway Agency.