US Bridges

US 54 over Spatter Dock Lake

Good

Pike County, Illinois · 1.2M SW Il 96 · Structure no. 075007700000000

Built
1974
51 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
138 ft
2 main spans
Daily traffic
2,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 54 over Spatter Dock Lake is a steel continuous stringer/multi-beam or girder carrying US 54 over Spatter Dock Lake in Pike County, Illinois. It was built in 1974, so it is 51 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,500 vehicles a day, roughly 18% of them trucks, projected to reach 2,668 by 2046. The structure is 138 ft (42 m) long and 46 ft wide. If it were closed, the detour would be 60.9 mi (98 km).

CarriesUS 54
CrossesSpatter Dock Lake
Location1.2M SW Il 96
RouteU.S. Route 54
Coordinates39.50399, -90.98901
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating101.4 US tons
Inventory rating60.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length138 ft (42 m)
Longest span67 ft (20.3 m)
Deck width46 ft (14 m)
Roadway width42 ft (12.9 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 Spatter Dock Lake built?

It was built in 1974, making it 51 years old in 2025.

What condition is US 54 over Spatter Dock Lake in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does US 54 over Spatter Dock Lake carry?

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

How long is US 54 over Spatter Dock Lake?

The structure is 138 ft (42 m) long with a longest span of 67 ft (20.3 m) and a deck 46 ft wide.

Who owns US 54 over Spatter Dock Lake?

It is owned by the State Highway Agency.