US Bridges

Harlem RD over Rock Creek

Fair

Will County, Illinois · 1.8 M N Peotone · Structure no. 099496000000000

Built
1992
33 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
775
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Harlem RD over Rock Creek is a prestressed concrete box beam or girders - multiple carrying Harlem RD over Rock Creek in Will County, Illinois. It was built in 1992, so it is 33 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 775 vehicles a day, roughly 11% of them trucks, projected to reach 1,116 by 2046. The structure is 43 ft (13.1 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesHarlem RD
CrossesRock Creek
Location1.8 M N Peotone
RouteCounty Highway 0
Coordinates41.35982, -87.78586
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be 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

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span41 ft (12.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic775 (2023)
Projected traffic1,116 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Harlem RD over Rock Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Harlem RD 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 June 2023.

How much traffic does Harlem RD over Rock Creek carry?

About 775 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Harlem RD over Rock Creek?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.6 m) and a deck 24 ft wide.

Who owns Harlem RD over Rock Creek?

It is owned by the Town or Township Highway Agency.