US Bridges

Wilmington-Peotne over Rock Creek

Fair

Will County, Illinois · 0.5 MI W I-57 · Structure no. 099334400000000

Built
1994
31 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
101 ft
3 main spans
Daily traffic
6,300
2023 count
Owner
County
County Highway Agency

About this bridge

Wilmington-Peotne over Rock Creek is a concrete continuous slab carrying Wilmington-Peotne over Rock Creek in Will County, Illinois. It was built in 1994, so it is 31 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 6,300 vehicles a day, roughly 20% of them trucks, projected to reach 8,064 by 2046. The structure is 101 ft (30.7 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWilmington-Peotne
CrossesRock Creek
Location0.5 MI W I-57
CountyWill County
StateIllinois
Coordinates41.32433, -87.83093
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length101 ft (30.7 m)
Longest span37 ft (11.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2023)
Projected traffic8,064 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Wilmington-Peotne over Rock Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Wilmington-Peotne over Rock 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 2024.

How much traffic does Wilmington-Peotne over Rock Creek carry?

About 6,300 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is Wilmington-Peotne over Rock Creek?

The structure is 101 ft (30.7 m) long with a longest span of 37 ft (11.3 m) and a deck 43 ft wide.

Who owns Wilmington-Peotne over Rock Creek?

It is owned by the County Highway Agency.