US Bridges

Missouri Av/Fau 91 over I-55/64; US 40 WB

Good

St. Clair County, Illinois · 1/2 MI W 3rd ST Exit · Structure no. 082013500000000

Built
1965
60 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
139 ft
3 main spans
Daily traffic
10
2023 count
Owner
State
State Highway Agency

About this bridge

Missouri Av/Fau 91 over I-55/64; US 40 WB is a steel continuous stringer/multi-beam or girder carrying Missouri Av/Fau 91 over I-55/64; US 40 WB in St. Clair County, Illinois. It was built in 1965, so it is 60 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 30% of them trucks, projected to reach 10 by 2046. The structure is 139 ft (42.4 m) long and 59 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMissouri Av/Fau 91
CrossesI-55/64; US 40 WB
Location1/2 MI W 3rd ST Exit
CountySt. Clair County
StateIllinois
Coordinates38.62837, -90.16153
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length139 ft (42.4 m)
Longest span58 ft (17.7 m)
Deck width59 ft (18 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic10 by 2046
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$900,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Missouri Av/Fau 91 over I-55/64; US 40 WB built?

It was built in 1965, making it 60 years old in 2025.

What condition is Missouri Av/Fau 91 over I-55/64; US 40 WB in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Missouri Av/Fau 91 over I-55/64; US 40 WB carry?

About 10 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is Missouri Av/Fau 91 over I-55/64; US 40 WB?

The structure is 139 ft (42.4 m) long with a longest span of 58 ft (17.7 m) and a deck 59 ft wide.

Who owns Missouri Av/Fau 91 over I-55/64; US 40 WB?

It is owned by the State Highway Agency.