US Bridges

Ill 111 over FAI 64

Fair

St. Clair County, Illinois · .39 M N ST Clair Ave · Structure no. 082016600000000

Built
1973
52 years old, rebuilt 1997
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
266 ft
4 main spans
Daily traffic
6,950
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 111 over FAI 64 is a steel continuous stringer/multi-beam or girder carrying Ill 111 over FAI 64 in St. Clair County, Illinois. It was built in 1973 and reconstructed in 1997, so it is 52 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 6,950 vehicles a day, roughly 11% of them trucks, projected to reach 11,060 by 2046. The structure is 266 ft (81.1 m) long and 86 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIll 111
CrossesFAI 64
Location.39 M N ST Clair Ave
RouteState Highway 111
CountySt. Clair County
StateIllinois
Coordinates38.62115, -90.09302
Functional classUrban Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating32.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length266 ft (81.1 m)
Longest span85 ft (25.9 m)
Deck width86 ft (26.2 m)
Roadway width79 ft (24.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,950 (2023)
Projected traffic11,060 by 2046
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 111 over FAI 64 built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 1997.

What condition is Ill 111 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 111 over FAI 64 carry?

About 6,950 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Ill 111 over FAI 64?

The structure is 266 ft (81.1 m) long with a longest span of 85 ft (25.9 m) and a deck 86 ft wide.

Who owns Ill 111 over FAI 64?

It is owned by the State Highway Agency.