US Bridges

US 54 over Cockelbur Slough

Fair

Pike County, Illinois · 2.9M SW Il 96 · Structure no. 075002000000000

Built
1929
96 years old, rebuilt 1975
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
56 ft
2 main spans
Daily traffic
2,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 54 over Cockelbur Slough is a concrete continuous slab carrying US 54 over Cockelbur Slough in Pike County, Illinois. It was built in 1929 and reconstructed in 1975, so it is 96 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 2,500 vehicles a day, roughly 18% of them trucks, projected to reach 2,668 by 2046. The structure is 56 ft (17.1 m) long and 47 ft wide. If it were closed, the detour would be 60.9 mi (98 km).

Location

Open in Google Maps
CarriesUS 54
CrossesCockelbur Slough
Location2.9M SW Il 96
RouteU.S. Route 54
CountyPike County
StateIllinois
Coordinates39.48839, -91.01058
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span27 ft (8.2 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2023)
Projected traffic2,668 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.9 mi (98 km)
TollOn a free road
National Highway SystemYes

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 54 over Cockelbur Slough built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1975.

What condition is US 54 over Cockelbur Slough 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 April 2023.

How much traffic does US 54 over Cockelbur Slough carry?

About 2,500 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is US 54 over Cockelbur Slough?

The structure is 56 ft (17.1 m) long with a longest span of 27 ft (8.2 m) and a deck 47 ft wide.

Who owns US 54 over Cockelbur Slough?

It is owned by the State Highway Agency.