US Bridges

I-155 & Ramps B & over N Fk Prairie Creek

Fair

Logan County, Illinois · .1M N US 136 · Structure no. 054202700000000

Built
1991
34 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
6,800
2023 count
Owner
State
State Highway Agency

About this bridge

I-155 & Ramps B & over N Fk Prairie Creek is a concrete culvert carrying I-155 & Ramps B & over N Fk Prairie Creek in Logan County, Illinois. It was built in 1991, so it is 34 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 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 6,800 vehicles a day, roughly 21% of them trucks, projected to reach 6,800 by 2046. The structure is 33 ft (10.1 m) long.

Location

Open in Google Maps
CarriesI-155 & Ramps B &
CrossesN Fk Prairie Creek
Location.1M N US 136
RouteInterstate 155
CountyLogan County
StateIllinois
Coordinates40.31064, -89.45354
Functional classRural Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating100.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,800 (2023)
Projected traffic6,800 by 2046
Trucks21%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-155 & Ramps B & over N Fk Prairie Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is I-155 & Ramps B & over N Fk Prairie Creek 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 August 2024.

How much traffic does I-155 & Ramps B & over N Fk Prairie Creek carry?

About 6,800 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is I-155 & Ramps B & over N Fk Prairie Creek?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns I-155 & Ramps B & over N Fk Prairie Creek?

It is owned by the State Highway Agency.