US Bridges

US Rt 6 over Walbridge Creek

Fair

LaSalle County, Illinois · 3.63 MI E of Ill 71 · Structure no. 050200000000000

Built
1958
67 years old, rebuilt 1970
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
3,850
2023 count
Owner
State
State Highway Agency

About this bridge

US Rt 6 over Walbridge Creek is a concrete continuous culvert carrying US Rt 6 over Walbridge Creek in LaSalle County, Illinois. It was built in 1958 and reconstructed in 1970, so it is 67 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 5 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 3,850 vehicles a day, roughly 7% of them trucks, projected to reach 4,091 by 2046. The structure is 29 ft (8.7 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS Rt 6
CrossesWalbridge Creek
Location3.63 MI E of Ill 71
RouteU.S. Route 6
CountyLaSalle County
StateIllinois
Coordinates41.33935, -88.73732
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.9 US tons
Inventory rating56.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length29 ft (8.7 m)
Longest span13 ft (4.1 m)
Deck width44 ft (13.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,850 (2023)
Projected traffic4,091 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Rt 6 over Walbridge Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1970.

What condition is US Rt 6 over Walbridge 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 January 2024.

How much traffic does US Rt 6 over Walbridge Creek carry?

About 3,850 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US Rt 6 over Walbridge Creek?

The structure is 29 ft (8.7 m) long with a longest span of 13 ft (4.1 m) and a deck 44 ft wide.

Who owns US Rt 6 over Walbridge Creek?

It is owned by the State Highway Agency.