US Bridges

US51(NB)(FAP 322) over Stevens Creek

Fair

Macon County, Illinois · 3 MI N of Forsyth · Structure no. 058011400000000

Built
1983
42 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
103 ft
3 main spans
Daily traffic
12,000
2021 count
Owner
State
State Highway Agency

About this bridge

US51(NB)(FAP 322) over Stevens Creek is a steel continuous stringer/multi-beam or girder carrying US51(NB)(FAP 322) over Stevens Creek in Macon County, Illinois. It was built in 1983, so it is 42 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 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 12,000 vehicles a day, roughly 13% of them trucks, projected to reach 6,060 by 2046. The structure is 103 ft (31.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS51(NB)(FAP 322)
CrossesStevens Creek
Location3 MI N of Forsyth
RouteU.S. Route 51
CountyMacon County
StateIllinois
Coordinates39.98256, -88.95635
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating68.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span37 ft (11.2 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2021)
Projected traffic6,060 by 2046
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 US51(NB)(FAP 322) over Stevens Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is US51(NB)(FAP 322) over Stevens 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 March 2023.

How much traffic does US51(NB)(FAP 322) over Stevens Creek carry?

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

How long is US51(NB)(FAP 322) over Stevens Creek?

The structure is 103 ft (31.4 m) long with a longest span of 37 ft (11.2 m) and a deck 43 ft wide.

Who owns US51(NB)(FAP 322) over Stevens Creek?

It is owned by the State Highway Agency.