US Bridges

I- 55 NB over Mink Creek

Good

Will County, Illinois · 0.8 M N of US 30 · Structure no. 099461500000000

Built
1995
30 years old, rebuilt 2007
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
41,750
2024 count
Owner
State
State Highway Agency

About this bridge

I- 55 NB over Mink Creek is a concrete continuous slab carrying I- 55 NB over Mink Creek in Will County, Illinois. It was built in 1995 and reconstructed in 2007, so it is 30 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 41,750 vehicles a day, roughly 13% of them trucks, projected to reach 54,288 by 2046. The structure is 78 ft (23.7 m) long and 57 ft wide.

CarriesI- 55 NB
CrossesMink Creek
Location0.8 M N of US 30
RouteInterstate 55
Coordinates41.59414, -88.16292
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length78 ft (23.7 m)
Longest span25 ft (7.6 m)
Deck width57 ft (17.5 m)
Roadway width54 ft (16.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,750 (2024)
Projected traffic54,288 by 2046
Trucks13%
Lanes on structure3
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- 55 NB over Mink Creek built?

It was built in 1995, making it 30 years old in 2025. It was reconstructed in 2007.

What condition is I- 55 NB over Mink Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

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

About 41,750 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is I- 55 NB over Mink Creek?

The structure is 78 ft (23.7 m) long with a longest span of 25 ft (7.6 m) and a deck 57 ft wide.

Who owns I- 55 NB over Mink Creek?

It is owned by the State Highway Agency.