US Bridges

State St/ FAU 9182 over Harding Ditch

Fair

St. Clair County, Illinois · .5 M.S FAU9166/US50 · Structure no. 082026400000000

Built
1981
44 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
103 ft
3 main spans
Daily traffic
5,950
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

State St/ FAU 9182 over Harding Ditch is a prestressed concrete box beam or girders - multiple carrying State St/ FAU 9182 over Harding Ditch in St. Clair County, Illinois. It was built in 1981, so it is 44 years old, younger 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 5,950 vehicles a day, roughly 7% of them trucks, projected to reach 6,919 by 2046. The structure is 103 ft (31.4 m) long and 99 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesState St/ FAU 9182
CrossesHarding Ditch
Location.5 M.S FAU9166/US50
CountySt. Clair County
StateIllinois
Coordinates38.60168, -90.08333
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating42.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span43 ft (13.1 m)
Deck width99 ft (30.3 m)
Roadway width87 ft (26.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,950 (2023)
Projected traffic6,919 by 2046
Trucks7%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 State St/ FAU 9182 over Harding Ditch built?

It was built in 1981, making it 44 years old in 2025.

What condition is State St/ FAU 9182 over Harding Ditch 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 October 2024.

How much traffic does State St/ FAU 9182 over Harding Ditch carry?

About 5,950 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is State St/ FAU 9182 over Harding Ditch?

The structure is 103 ft (31.4 m) long with a longest span of 43 ft (13.1 m) and a deck 99 ft wide.

Who owns State St/ FAU 9182 over Harding Ditch?

It is owned by the City or Municipal Highway Agency.