US Bridges

FAI 155 SB over S Br Prairie Creek

Fair

Logan County, Illinois · 3.0MI S I-155/IL136 · Structure no. 054008000000000

Built
1988
37 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
5,300
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 155 SB over S Br Prairie Creek is a prestressed concrete stringer/multi-beam or girder carrying FAI 155 SB over S Br Prairie Creek in Logan County, Illinois. It was built in 1988, so it is 37 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 5,300 vehicles a day, roughly 19% of them trucks, projected to reach 5,066 by 2046. The structure is 72 ft (21.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFAI 155 SB
CrossesS Br Prairie Creek
Location3.0MI S I-155/IL136
RouteInterstate 155
Coordinates40.26404, -89.46055
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.5 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span70 ft (21.2 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,300 (2023)
Projected traffic5,066 by 2046
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 FAI 155 SB over S Br Prairie Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is FAI 155 SB over S Br 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 July 2023.

How much traffic does FAI 155 SB over S Br Prairie Creek carry?

About 5,300 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is FAI 155 SB over S Br Prairie Creek?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.2 m) and a deck 43 ft wide.

Who owns FAI 155 SB over S Br Prairie Creek?

It is owned by the State Highway Agency.