US Bridges

US 45 FAS 338 over Spring Creek

Good

Iroquois County, Illinois · 10.58 MI S of Il 54 · Structure no. 038021400000000

Built
2009
16 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete
Length
95 ft
3 main spans
Daily traffic
1,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 45 FAS 338 over Spring Creek is a concrete slab carrying US 45 FAS 338 over Spring Creek in Iroquois County, Illinois. It was built in 2009, so it is 16 years old, younger 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 1,900 vehicles a day, roughly 22% of them trucks, projected to reach 2,098 by 2035. The structure is 95 ft (29 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 45 FAS 338
CrossesSpring Creek
Location10.58 MI S of Il 54
RouteU.S. Route 45
Coordinates40.56589, -88.05131
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating89.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length95 ft (29 m)
Longest span36 ft (11 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic2,098 by 2035
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 US 45 FAS 338 over Spring Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is US 45 FAS 338 over Spring 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 45 FAS 338 over Spring Creek carry?

About 1,900 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is US 45 FAS 338 over Spring Creek?

The structure is 95 ft (29 m) long with a longest span of 36 ft (11 m) and a deck 35 ft wide.

Who owns US 45 FAS 338 over Spring Creek?

It is owned by the State Highway Agency.