US Bridges

I-74 EB over N Fork Salt Creek

Fair

McLean County, Illinois · 14.86 MI E of US 51 · Structure no. 057013300000000

Built
1970
55 years old, rebuilt 2004
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
139 ft
2 main spans
Daily traffic
10,750
2023 count
Owner
State
State Highway Agency

About this bridge

I-74 EB over N Fork Salt Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying I-74 EB over N Fork Salt Creek in McLean County, Illinois. It was built in 1970 and reconstructed in 2004, so it is 55 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 6 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 10,750 vehicles a day, roughly 33% of them trucks, projected to reach 11,060 by 2046. The structure is 139 ft (42.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-74 EB
CrossesN Fork Salt Creek
Location14.86 MI E of US 51
RouteInterstate 74
Coordinates40.32726, -88.74535
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length139 ft (42.4 m)
Longest span67 ft (20.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,750 (2023)
Projected traffic11,060 by 2046
Trucks33%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-74 EB over N Fork Salt Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2004.

What condition is I-74 EB over N Fork Salt 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 May 2024.

How much traffic does I-74 EB over N Fork Salt Creek carry?

About 10,750 vehicles per day (2023 count), of which roughly 33% are trucks.

How long is I-74 EB over N Fork Salt Creek?

The structure is 139 ft (42.4 m) long with a longest span of 67 ft (20.4 m) and a deck 43 ft wide.

Who owns I-74 EB over N Fork Salt Creek?

It is owned by the State Highway Agency.