US Bridges

FAI 64 WB over Kaskaskia River

Fair

Washington County, Illinois · Clinton CO Line · Structure no. 095004000000000

Built
1971
54 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
289 ft
3 main spans
Daily traffic
15,500
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 64 WB over Kaskaskia River is a steel continuous stringer/multi-beam or girder carrying FAI 64 WB over Kaskaskia River in Washington 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 15,500 vehicles a day, roughly 30% of them trucks, projected to reach 17,848 by 2046. The structure is 289 ft (88.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFAI 64 WB
CrossesKaskaskia River
LocationClinton CO Line
RouteInterstate 64
CountyWashington County
StateIllinois
Coordinates38.47862, -89.58211
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length289 ft (88.1 m)
Longest span111 ft (33.7 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2023)
Projected traffic17,848 by 2046
Trucks30%
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 Kaskaskia River built?

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

What condition is FAI 64 WB over Kaskaskia River 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 Kaskaskia River carry?

About 15,500 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is FAI 64 WB over Kaskaskia River?

The structure is 289 ft (88.1 m) long with a longest span of 111 ft (33.7 m) and a deck 43 ft wide.

Who owns FAI 64 WB over Kaskaskia River?

It is owned by the State Highway Agency.