US Bridges

US 51(FAP 322) over Stevens Creek

Good

Macon County, Illinois · 2.5 MI S of Maroa · Structure no. 058005100000000

Built
1971
54 years old, rebuilt 1982
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
35 ft
3 main spans
Daily traffic
12,000
2021 count
Owner
State
State Highway Agency

About this bridge

US 51(FAP 322) over Stevens Creek is a concrete culvert carrying US 51(FAP 322) over Stevens Creek in Macon County, Illinois. It was built in 1971 and reconstructed in 1982, so it is 54 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 12,000 vehicles a day, roughly 13% of them trucks, projected to reach 12,120 by 2046. The structure is 35 ft (10.7 m) long and 176 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesUS 51(FAP 322)
CrossesStevens Creek
Location2.5 MI S of Maroa
RouteU.S. Route 51
Coordinates39.99588, -88.9564
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.7 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span11 ft (3.4 m)
Deck width176 ft (53.7 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2021)
Projected traffic12,120 by 2046
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 51(FAP 322) over Stevens Creek built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1982.

What condition is US 51(FAP 322) over Stevens Creek 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 December 2024.

How much traffic does US 51(FAP 322) over Stevens Creek carry?

About 12,000 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is US 51(FAP 322) over Stevens Creek?

The structure is 35 ft (10.7 m) long with a longest span of 11 ft (3.4 m) and a deck 176 ft wide.

Who owns US 51(FAP 322) over Stevens Creek?

It is owned by the State Highway Agency.