US Bridges

Bunkum Rd/Fau 9160 over Harding Ditch

Good

St. Clair County, Illinois · 1 MI E Il 111 · Structure no. 082310000000000

Built
2008
17 years old
Condition
Good
inspected March 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
1,500
2023 count
Owner
County
County Highway Agency

About this bridge

Bunkum Rd/Fau 9160 over Harding Ditch is a prestressed concrete box beam or girders - multiple carrying Bunkum Rd/Fau 9160 over Harding Ditch in St. Clair County, Illinois. It was built in 2008, so it is 17 years old, younger 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 1,500 vehicles a day, roughly 19% of them trucks, projected to reach 1,566 by 2046. The structure is 82 ft (24.9 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesBunkum Rd/Fau 9160
CrossesHarding Ditch
Location1 MI E Il 111
CountySt. Clair County
StateIllinois
Coordinates38.62267, -90.07507
Functional classUrban Collector

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating44.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length82 ft (24.9 m)
Longest span79 ft (24.1 m)
Deck width33 ft (10.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2023)
Projected traffic1,566 by 2046
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bunkum Rd/Fau 9160 over Harding Ditch built?

It was built in 2008, making it 17 years old in 2025.

What condition is Bunkum Rd/Fau 9160 over Harding Ditch 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 2022.

How much traffic does Bunkum Rd/Fau 9160 over Harding Ditch carry?

About 1,500 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is Bunkum Rd/Fau 9160 over Harding Ditch?

The structure is 82 ft (24.9 m) long with a longest span of 79 ft (24.1 m) and a deck 33 ft wide.

Who owns Bunkum Rd/Fau 9160 over Harding Ditch?

It is owned by the County Highway Agency.