US Bridges

US Route 30 over Willow Creek

Fair

Lee County, Illinois · 1.0 MI W of I-39 · Structure no. 052003500000000

Built
1932
93 years old, rebuilt 1983
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
86 ft
2 main spans
Daily traffic
1,450
2023 count
Owner
State
State Highway Agency

About this bridge

US Route 30 over Willow Creek is a steel continuous stringer/multi-beam or girder carrying US Route 30 over Willow Creek in Lee County, Illinois. It was built in 1932 and reconstructed in 1983, so it is 93 years old, older 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 21% of them trucks, projected to reach 1,667 by 2046. The structure is 86 ft (26.2 m) long and 35 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesUS Route 30
CrossesWillow Creek
Location1.0 MI W of I-39
RouteU.S. Route 30
CountyLee County
StateIllinois
Coordinates41.76036, -89.02588
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating98.2 US tons
Inventory rating63.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span42 ft (12.8 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
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 Route 30 over Willow Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1983.

What condition is US Route 30 over Willow 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 2024.

How much traffic does US Route 30 over Willow Creek carry?

About 1,450 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US Route 30 over Willow Creek?

The structure is 86 ft (26.2 m) long with a longest span of 42 ft (12.8 m) and a deck 35 ft wide.

Who owns US Route 30 over Willow Creek?

It is owned by the State Highway Agency.