US Bridges

Mullins Creek RD over Prairie Du Pont

Fair

St. Clair County, Illinois · 1.25 MI NE Ch 39 · Structure no. 082660000000000

Built
1995
30 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
50
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mullins Creek RD over Prairie Du Pont is a prestressed concrete box beam or girders - multiple carrying Mullins Creek RD over Prairie Du Pont in St. Clair County, Illinois. It was built in 1995, so it is 30 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 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 50 vehicles a day, roughly 20% of them trucks, projected to reach 76 by 2046. The structure is 82 ft (25.1 m) long and 27 ft wide.

Location

Open in Google Maps
CarriesMullins Creek RD
CrossesPrairie Du Pont
Location1.25 MI NE Ch 39
RouteCity Street 0
CountySt. Clair County
StateIllinois
Coordinates38.54067, -90.15083
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating64.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length82 ft (25.1 m)
Longest span80 ft (24.4 m)
Deck width27 ft (8.3 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic76 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Mullins Creek RD over Prairie Du Pont built?

It was built in 1995, making it 30 years old in 2025.

What condition is Mullins Creek RD over Prairie Du Pont 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 June 2024.

How much traffic does Mullins Creek RD over Prairie Du Pont carry?

About 50 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is Mullins Creek RD over Prairie Du Pont?

The structure is 82 ft (25.1 m) long with a longest span of 80 ft (24.4 m) and a deck 27 ft wide.

Who owns Mullins Creek RD over Prairie Du Pont?

It is owned by the City or Municipal Highway Agency.