US Bridges

Il 3 over UPRR Prarie Dupont Cana

Good

St. Clair County, Illinois · North of Dupo · Structure no. 082003800000000

Built
2012
13 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
990 ft
4 main spans
Daily traffic
9,600
2023 count
Owner
State
State Highway Agency

About this bridge

Il 3 over UPRR Prarie Dupont Cana is a steel continuous stringer/multi-beam or girder carrying Il 3 over UPRR Prarie Dupont Cana in St. Clair County, Illinois. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,600 vehicles a day, roughly 11% of them trucks, projected to reach 8,282 by 2046. The structure is 990 ft (301.8 m) long and 59 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIl 3
CrossesUPRR Prarie Dupont Cana
LocationNorth of Dupo
RouteState Highway 3
CountySt. Clair County
StateIllinois
Coordinates38.54884, -90.19441
Functional classUrban Other Principal Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length990 ft (301.8 m)
Longest span330 ft (100.6 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,600 (2023)
Projected traffic8,282 by 2046
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Il 3 over UPRR Prarie Dupont Cana built?

It was built in 2012, making it 13 years old in 2025.

What condition is Il 3 over UPRR Prarie Dupont Cana 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 September 2023.

How much traffic does Il 3 over UPRR Prarie Dupont Cana carry?

About 9,600 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Il 3 over UPRR Prarie Dupont Cana?

The structure is 990 ft (301.8 m) long with a longest span of 330 ft (100.6 m) and a deck 59 ft wide.

Who owns Il 3 over UPRR Prarie Dupont Cana?

It is owned by the State Highway Agency.