US Bridges

Davis St/ FAU 9301 over Fish Lake

Good

St. Clair County, Illinois · 1.25MI W Ill RTE 3 · Structure no. 082305800000000

Built
1974
51 years old, rebuilt 2011
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
82 ft
3 main spans
Daily traffic
400
2023 count
Owner
County
County Highway Agency

About this bridge

Davis St/ FAU 9301 over Fish Lake is a prestressed concrete box beam or girders - multiple carrying Davis St/ FAU 9301 over Fish Lake in St. Clair County, Illinois. It was built in 1974 and reconstructed in 2011, so it is 51 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 400 vehicles a day, roughly 14% of them trucks, projected to reach 505 by 2046. The structure is 82 ft (25 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesDavis St/ FAU 9301
CrossesFish Lake
Location1.25MI W Ill RTE 3
CountySt. Clair County
StateIllinois
Coordinates38.50392, -90.22867
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length82 ft (25 m)
Longest span36 ft (11 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2023)
Projected traffic505 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$348,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Davis St/ FAU 9301 over Fish Lake built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2011.

What condition is Davis St/ FAU 9301 over Fish Lake 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 March 2024.

How much traffic does Davis St/ FAU 9301 over Fish Lake carry?

About 400 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Davis St/ FAU 9301 over Fish Lake?

The structure is 82 ft (25 m) long with a longest span of 36 ft (11 m) and a deck 30 ft wide.

Who owns Davis St/ FAU 9301 over Fish Lake?

It is owned by the County Highway Agency.