US Bridges

US 50 over Silver Ck Ovfl

Fair

St. Clair County, Illinois · 0.6 M W Lebanon RD · Structure no. 082200000000000

Built
1918
107 years old, rebuilt 1952
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
33 ft
3 main spans
Daily traffic
16,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 50 over Silver Ck Ovfl is a concrete continuous culvert carrying US 50 over Silver Ck Ovfl in St. Clair County, Illinois. It was built in 1918 and reconstructed in 1952, so it is 107 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 16,000 vehicles a day, roughly 8% of them trucks, projected to reach 14,241 by 2046. The structure is 33 ft (10.1 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 50
CrossesSilver Ck Ovfl
Location0.6 M W Lebanon RD
RouteU.S. Route 50
CountySt. Clair County
StateIllinois
Coordinates38.59323, -89.8396
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.1 US tons
Inventory rating22.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2023)
Projected traffic14,241 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$89,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 50 over Silver Ck Ovfl built?

It was built in 1918, making it 107 years old in 2025. It was reconstructed in 1952.

What condition is US 50 over Silver Ck Ovfl 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 July 2023.

How much traffic does US 50 over Silver Ck Ovfl carry?

About 16,000 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 50 over Silver Ck Ovfl?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 35 ft wide.

Who owns US 50 over Silver Ck Ovfl?

It is owned by the State Highway Agency.