US Bridges

Ill 159 over FAI 64

Fair

St. Clair County, Illinois · 0.57 MI E Ruby Lane · Structure no. 082017600000000

Built
1971
54 years old, rebuilt 2012
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
232 ft
2 main spans
Daily traffic
33,900
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 159 over FAI 64 is a steel continuous stringer/multi-beam or girder carrying Ill 159 over FAI 64 in St. Clair County, Illinois. It was built in 1971 and reconstructed in 2012, 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 33,900 vehicles a day, roughly 2% of them trucks, projected to reach 18,079 by 2046. The structure is 232 ft (70.7 m) long and 109 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIll 159
CrossesFAI 64
Location0.57 MI E Ruby Lane
RouteState Highway 159
CountySt. Clair County
StateIllinois
Coordinates38.59903, -89.9851
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span93 ft (28.3 m)
Deck width109 ft (33.1 m)
Roadway width105 ft (32.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,900 (2023)
Projected traffic18,079 by 2046
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ill 159 over FAI 64 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2012.

What condition is Ill 159 over FAI 64 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 Ill 159 over FAI 64 carry?

About 33,900 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Ill 159 over FAI 64?

The structure is 232 ft (70.7 m) long with a longest span of 93 ft (28.3 m) and a deck 109 ft wide.

Who owns Ill 159 over FAI 64?

It is owned by the State Highway Agency.