US Bridges

US 24/FAP 317 over Intermit Stream

Poor

McLean County, Illinois · 13.13 M E of US 51 · Structure no. 057007000000000

Built
1959
66 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete Continuous
Length
87 ft
3 main spans
Daily traffic
2,650
2023 count
Owner
State
State Highway Agency

About this bridge

US 24/FAP 317 over Intermit Stream is a concrete continuous slab carrying US 24/FAP 317 over Intermit Stream in McLean County, Illinois. It was built in 1959, so it is 66 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,650 vehicles a day, roughly 27% of them trucks, projected to reach 3,232 by 2046. The structure is 87 ft (26.5 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesUS 24/FAP 317
CrossesIntermit Stream
Location13.13 M E of US 51
RouteU.S. Route 24
CountyMcLean County
StateIllinois
Coordinates40.74111, -88.75492
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating23.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span32 ft (9.8 m)
Deck width36 ft (11.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,650 (2023)
Projected traffic3,232 by 2046
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 US 24/FAP 317 over Intermit Stream built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 24/FAP 317 over Intermit Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does US 24/FAP 317 over Intermit Stream carry?

About 2,650 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is US 24/FAP 317 over Intermit Stream?

The structure is 87 ft (26.5 m) long with a longest span of 32 ft (9.8 m) and a deck 36 ft wide.

Who owns US 24/FAP 317 over Intermit Stream?

It is owned by the State Highway Agency.