US Bridges

Il 10 (fap 721) over Salt Creek

Fair

De Witt County, Illinois · 4 MI E of Clinton · Structure no. 020006200000000

Built
2008
17 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
188 ft
2 main spans
Daily traffic
1,450
2023 count
Owner
State
State Highway Agency

About this bridge

Il 10 (fap 721) over Salt Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 10 (fap 721) over Salt Creek in De Witt County, Illinois. It was built in 2008, so it is 17 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 1,450 vehicles a day, roughly 17% of them trucks, projected to reach 1,667 by 2046. The structure is 188 ft (57.3 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIl 10 (fap 721)
CrossesSalt Creek
Location4 MI E of Clinton
RouteState Highway 10
CountyDe Witt County
StateIllinois
Coordinates40.13448, -88.88487
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length188 ft (57.3 m)
Longest span93 ft (28.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (2023)
Projected traffic1,667 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

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 Il 10 (fap 721) over Salt Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Il 10 (fap 721) over Salt 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 November 2022.

How much traffic does Il 10 (fap 721) over Salt Creek carry?

About 1,450 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Il 10 (fap 721) over Salt Creek?

The structure is 188 ft (57.3 m) long with a longest span of 93 ft (28.3 m) and a deck 35 ft wide.

Who owns Il 10 (fap 721) over Salt Creek?

It is owned by the State Highway Agency.