US Bridges

Il 100 over Drainage

Fair

Jersey County, Illinois · 0.2 MI S of 042-2001 · Structure no. 042245100000000

Built
1935
90 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
775
2023 count
Owner
State
State Highway Agency

About this bridge

Il 100 over Drainage is a concrete continuous culvert carrying Il 100 over Drainage in Jersey County, Illinois. It was built in 1935, so it is 90 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 775 vehicles a day, roughly 17% of them trucks, projected to reach 808 by 2046. The structure is 24 ft (7.3 m) long and 22 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesIl 100
CrossesDrainage
Location0.2 MI S of 042-2001
RouteState Highway 100
CountyJersey County
StateIllinois
Coordinates38.98599, -90.54411
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 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 rating34.3 US tons
Inventory rating20.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic775 (2023)
Projected traffic808 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

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 100 over Drainage built?

It was built in 1935, making it 90 years old in 2025.

What condition is Il 100 over Drainage 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 2024.

How much traffic does Il 100 over Drainage carry?

About 775 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Il 100 over Drainage?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns Il 100 over Drainage?

It is owned by the State Highway Agency.