US Bridges

I-155 over Trib Sugar Creek

Fair

Logan County, Illinois · 1.5M NW I-55 · Structure no. 054202000000000

Built
1986
39 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
10,600
2023 count
Owner
State
State Highway Agency

About this bridge

I-155 over Trib Sugar Creek is a concrete culvert carrying I-155 over Trib Sugar Creek in Logan County, Illinois. It was built in 1986, so it is 39 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 10,600 vehicles a day, roughly 19% of them trucks, projected to reach 10,133 by 2046. The structure is 33 ft (10.2 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesI-155
CrossesTrib Sugar Creek
Location1.5M NW I-55
RouteInterstate 155
CountyLogan County
StateIllinois
Coordinates40.20371, -89.43779
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 protection7 GoodSome minor problems.
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 rating98.2 US tons
Inventory rating61.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length33 ft (10.2 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,600 (2023)
Projected traffic10,133 by 2046
Trucks19%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 I-155 over Trib Sugar Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is I-155 over Trib Sugar 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 over Trib Sugar Creek carry?

About 10,600 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I-155 over Trib Sugar Creek?

The structure is 33 ft (10.2 m) long with a longest span of 15 ft (4.6 m).

Who owns I-155 over Trib Sugar Creek?

It is owned by the State Highway Agency.