US Bridges

US 51 (fap 322) over E Fork Kaskaskia Ovf

Fair

Marion County, Illinois · 9.6 MI S Fayette C L · Structure no. 061000400000000

Built
1958
67 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
2,750
2023 count
Owner
State
State Highway Agency

About this bridge

US 51 (fap 322) over E Fork Kaskaskia Ovf is a concrete continuous slab carrying US 51 (fap 322) over E Fork Kaskaskia Ovf in Marion County, Illinois. It was built in 1958, so it is 67 years old, older 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 2,750 vehicles a day, roughly 18% of them trucks, projected to reach 2,828 by 2046. The structure is 100 ft (30.5 m) long and 37 ft wide. If it were closed, the detour would be 51 mi (82 km).

Location

Open in Google Maps
CarriesUS 51 (fap 322)
CrossesE Fork Kaskaskia Ovf
Location9.6 MI S Fayette C L
RouteU.S. Route 51
CountyMarion County
StateIllinois
Coordinates38.69553, -89.0964
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span37 ft (11.2 m)
Deck width37 ft (11.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,750 (2023)
Projected traffic2,828 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed51 mi (82 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 US 51 (fap 322) over E Fork Kaskaskia Ovf built?

It was built in 1958, making it 67 years old in 2025.

What condition is US 51 (fap 322) over E Fork Kaskaskia Ovf 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 January 2025.

How much traffic does US 51 (fap 322) over E Fork Kaskaskia Ovf carry?

About 2,750 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is US 51 (fap 322) over E Fork Kaskaskia Ovf?

The structure is 100 ft (30.5 m) long with a longest span of 37 ft (11.2 m) and a deck 37 ft wide.

Who owns US 51 (fap 322) over E Fork Kaskaskia Ovf?

It is owned by the State Highway Agency.