US Bridges

FAI 64 WB over Silver Creek

Fair

St. Clair County, Illinois · 1.79 MI E of Ill 158 · Structure no. 082018600000000

Built
1971
54 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
478 ft
5 main spans
Daily traffic
20,950
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 64 WB over Silver Creek is a steel continuous stringer/multi-beam or girder carrying FAI 64 WB over Silver Creek in St. Clair County, Illinois. It was built in 1971, so it is 54 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 20,950 vehicles a day, roughly 23% of them trucks, projected to reach 21,513 by 2046. The structure is 478 ft (145.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFAI 64 WB
CrossesSilver Creek
Location1.79 MI E of Ill 158
RouteInterstate 64
Coordinates38.56123, -89.83269
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length478 ft (145.8 m)
Longest span105 ft (31.9 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,950 (2023)
Projected traffic21,513 by 2046
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 FAI 64 WB over Silver Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is FAI 64 WB over Silver Creek 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 February 2023.

How much traffic does FAI 64 WB over Silver Creek carry?

About 20,950 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is FAI 64 WB over Silver Creek?

The structure is 478 ft (145.8 m) long with a longest span of 105 ft (31.9 m) and a deck 43 ft wide.

Who owns FAI 64 WB over Silver Creek?

It is owned by the State Highway Agency.