US Bridges

I-55 NB over Kickapoo Creek

Fair

Logan County, Illinois · 3.6 N BUS55 Lawndale · Structure no. 054006300000000

Built
1974
51 years old, rebuilt 2015
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
317 ft
3 main spans
Daily traffic
11,600
2023 count
Owner
State
State Highway Agency

About this bridge

I-55 NB over Kickapoo Creek is a steel continuous stringer/multi-beam or girder carrying I-55 NB over Kickapoo Creek in Logan County, Illinois. It was built in 1974 and reconstructed in 2015, so it is 51 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 5 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 11,600 vehicles a day, roughly 31% of them trucks, projected to reach 12,495 by 2046. The structure is 317 ft (96.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-55 NB
CrossesKickapoo Creek
Location3.6 N BUS55 Lawndale
RouteInterstate 55
CountyLogan County
StateIllinois
Coordinates40.22159, -89.27654
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length317 ft (96.5 m)
Longest span121 ft (36.9 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,600 (2023)
Projected traffic12,495 by 2046
Trucks31%
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 I-55 NB over Kickapoo Creek built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2015.

What condition is I-55 NB over Kickapoo 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 December 2024.

How much traffic does I-55 NB over Kickapoo Creek carry?

About 11,600 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I-55 NB over Kickapoo Creek?

The structure is 317 ft (96.5 m) long with a longest span of 121 ft (36.9 m) and a deck 43 ft wide.

Who owns I-55 NB over Kickapoo Creek?

It is owned by the State Highway Agency.