US Bridges

US 51 (nb)(fap 322 over Ten Mile Creek

Fair

De Witt County, Illinois · 0.4 M S of Bus US 51 · Structure no. 020005100000000

Built
1985
40 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
7,450
2023 count
Owner
State
State Highway Agency

About this bridge

US 51 (nb)(fap 322 over Ten Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying US 51 (nb)(fap 322 over Ten Mile Creek in De Witt County, Illinois. It was built in 1985, so it is 40 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 7,450 vehicles a day, roughly 17% of them trucks, projected to reach 3,725 by 2046. The structure is 98 ft (29.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS 51 (nb)(fap 322
CrossesTen Mile Creek
Location0.4 M S of Bus US 51
RouteU.S. Route 51
CountyDe Witt County
StateIllinois
Coordinates40.17143, -88.96853
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 rating98.2 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span92 ft (28 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,450 (2023)
Projected traffic3,725 by 2046
Trucks17%
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 US 51 (nb)(fap 322 over Ten Mile Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is US 51 (nb)(fap 322 over Ten Mile 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 September 2024.

How much traffic does US 51 (nb)(fap 322 over Ten Mile Creek carry?

About 7,450 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US 51 (nb)(fap 322 over Ten Mile Creek?

The structure is 98 ft (29.9 m) long with a longest span of 92 ft (28 m) and a deck 43 ft wide.

Who owns US 51 (nb)(fap 322 over Ten Mile Creek?

It is owned by the State Highway Agency.