US Bridges

US 50 over Little Silver Creek

Good

St. Clair County, Illinois · At E Edge Lebanon · Structure no. 082003700000000

Built
1965
60 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
147 ft
4 main spans
Daily traffic
9,450
2023 count
Owner
State
State Highway Agency

About this bridge

US 50 over Little Silver Creek is a concrete continuous slab carrying US 50 over Little Silver Creek in St. Clair County, Illinois. It was built in 1965, so it is 60 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 9,450 vehicles a day, roughly 11% of them trucks, projected to reach 8,636 by 2046. The structure is 147 ft (44.9 m) long and 36 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesUS 50
CrossesLittle Silver Creek
LocationAt E Edge Lebanon
RouteU.S. Route 50
CountySt. Clair County
StateIllinois
Coordinates38.60384, -89.80084
Functional classUrban Other Principal Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20
Structure length147 ft (44.9 m)
Longest span29 ft (8.8 m)
Deck width36 ft (10.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,450 (2023)
Projected traffic8,636 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$405,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 50 over Little Silver Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is US 50 over Little Silver Creek 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 July 2023.

How much traffic does US 50 over Little Silver Creek carry?

About 9,450 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 50 over Little Silver Creek?

The structure is 147 ft (44.9 m) long with a longest span of 29 ft (8.8 m) and a deck 36 ft wide.

Who owns US 50 over Little Silver Creek?

It is owned by the State Highway Agency.