US Bridges

Il 3-FAP 312 over Drainage Ditch

Good

Jackson County, Illinois · 2 MI S FAS 312 · Structure no. 039006700000000

Built
2002
23 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
1,400
2023 count
Owner
State
State Highway Agency

About this bridge

Il 3-FAP 312 over Drainage Ditch is a steel stringer/multi-beam or girder carrying Il 3-FAP 312 over Drainage Ditch in Jackson County, Illinois. It was built in 2002, so it is 23 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 1,400 vehicles a day, roughly 17% of them trucks, projected to reach 1,515 by 2046. The structure is 80 ft (24.4 m) long and 40 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

CarriesIl 3-FAP 312
CrossesDrainage Ditch
Location2 MI S FAS 312
RouteState Highway 3
Coordinates37.68393, -89.47807
Functional classRural Principal Arterial - Other

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 protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating46.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span75 ft (22.8 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic1,515 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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-FAP 312 over Drainage Ditch built?

It was built in 2002, making it 23 years old in 2025.

What condition is Il 3-FAP 312 over Drainage 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 September 2024.

How much traffic does Il 3-FAP 312 over Drainage Ditch carry?

About 1,400 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Il 3-FAP 312 over Drainage Ditch?

The structure is 80 ft (24.4 m) long with a longest span of 75 ft (22.8 m) and a deck 40 ft wide.

Who owns Il 3-FAP 312 over Drainage Ditch?

It is owned by the State Highway Agency.