US Bridges

Old US 51 (sbi 2C) over Webster Creek

Fair

Marion County, Illinois · 1.5 MI S Wamac · Structure no. 061003200000000

Built
1920
105 years old
Condition
Fair
inspected January 2025
Type
Other
Concrete
Length
53 ft
1 main span
Daily traffic
150
2022 count
Owner
State
State Highway Agency

About this bridge

Old US 51 (sbi 2C) over Webster Creek is a concrete other carrying Old US 51 (sbi 2C) over Webster Creek in Marion County, Illinois. It was built in 1920, so it is 105 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 150 vehicles a day, roughly 4% of them trucks, projected to reach 101 by 2046. The structure is 53 ft (16.2 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOld US 51 (sbi 2C)
CrossesWebster Creek
Location1.5 MI S Wamac
RouteCounty Highway 0
CountyMarion County
StateIllinois
Coordinates38.48343, -89.14205
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26.5 US tons

Structure

Structure typeOther
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span51 ft (15.5 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic101 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$179,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old US 51 (sbi 2C) over Webster Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Old US 51 (sbi 2C) over Webster 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 2025.

How much traffic does Old US 51 (sbi 2C) over Webster Creek carry?

About 150 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Old US 51 (sbi 2C) over Webster Creek?

The structure is 53 ft (16.2 m) long with a longest span of 51 ft (15.5 m) and a deck 24 ft wide.

Who owns Old US 51 (sbi 2C) over Webster Creek?

It is owned by the State Highway Agency.