US Bridges

US 54 over Plum Point Slough

Poor

Pike County, Illinois · 5.2M SW Il 96 · Structure no. 075002200000000

Built
1928
97 years old, rebuilt 1976
Condition
Poor
inspected May 2024
Type
Channel Beam
Concrete
Length
33 ft
1 main span
Daily traffic
3,100
2023 count
Owner
State
State Highway Agency

About this bridge

US 54 over Plum Point Slough is a concrete channel beam carrying US 54 over Plum Point Slough in Pike County, Illinois. It was built in 1928 and reconstructed in 1976, so it is 97 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,100 vehicles a day, roughly 21% of them trucks, projected to reach 3,596 by 2046. The structure is 33 ft (10.1 m) long and 45 ft wide. If it were closed, the detour would be 60.9 mi (98 km).

Location

Open in Google Maps
CarriesUS 54
CrossesPlum Point Slough
Location5.2M SW Il 96
RouteU.S. Route 54
CountyPike County
StateIllinois
Coordinates39.46018, -91.03468
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating32.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width45 ft (13.7 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2023)
Projected traffic3,596 by 2046
Trucks21%
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 Plum Point Slough built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1976.

What condition is US 54 over Plum Point Slough in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does US 54 over Plum Point Slough carry?

About 3,100 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US 54 over Plum Point Slough?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 45 ft wide.

Who owns US 54 over Plum Point Slough?

It is owned by the State Highway Agency.