US Bridges

I-72 / US 36 (wb) over Walnut Cr/Sprague Dt

Fair

Pike County, Illinois · 2.12M W IL96/HULL in · Structure no. 075008700000000

Built
1986
39 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
414 ft
4 main spans
Daily traffic
4,700
2023 count
Owner
State
State Highway Agency

About this bridge

I-72 / US 36 (wb) over Walnut Cr/Sprague Dt is a steel continuous stringer/multi-beam or girder carrying I-72 / US 36 (wb) over Walnut Cr/Sprague Dt in Pike County, Illinois. It was built in 1986, so it is 39 years old, younger 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 4,700 vehicles a day, roughly 35% of them trucks, projected to reach 4,872 by 2046. The structure is 414 ft (126.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-72 / US 36 (wb)
CrossesWalnut Cr/Sprague Dt
Location2.12M W IL96/HULL in
RouteInterstate 72
CountyPike County
StateIllinois
Coordinates39.72808, -91.23219
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length414 ft (126.2 m)
Longest span125 ft (38.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2023)
Projected traffic4,872 by 2046
Trucks35%
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-72 / US 36 (wb) over Walnut Cr/Sprague Dt built?

It was built in 1986, making it 39 years old in 2025.

What condition is I-72 / US 36 (wb) over Walnut Cr/Sprague Dt 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 April 2023.

How much traffic does I-72 / US 36 (wb) over Walnut Cr/Sprague Dt carry?

About 4,700 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is I-72 / US 36 (wb) over Walnut Cr/Sprague Dt?

The structure is 414 ft (126.2 m) long with a longest span of 125 ft (38.1 m) and a deck 43 ft wide.

Who owns I-72 / US 36 (wb) over Walnut Cr/Sprague Dt?

It is owned by the State Highway Agency.