US Bridges

Black RD over Rock Run Creek

Fair

Will County, Illinois · 1/2 MI E I-55 · Structure no. 099303300000000

Built
1960
65 years old, rebuilt 1981
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
24,100
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Black RD over Rock Run Creek is a concrete slab carrying Black RD over Rock Run Creek in Will County, Illinois. It was built in 1960 and reconstructed in 1981, so it is 65 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 24,100 vehicles a day, roughly 2% of them trucks, projected to reach 32,256 by 2046. The structure is 32 ft (9.8 m) long and 56 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBlack RD
CrossesRock Run Creek
Location1/2 MI E I-55
CountyWill County
StateIllinois
Coordinates41.53636, -88.17267
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width56 ft (17.2 m)
Roadway width54 ft (16.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,100 (2023)
Projected traffic32,256 by 2046
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Black RD over Rock Run Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1981.

What condition is Black RD over Rock Run 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 2024.

How much traffic does Black RD over Rock Run Creek carry?

About 24,100 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Black RD over Rock Run Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 56 ft wide.

Who owns Black RD over Rock Run Creek?

It is owned by the City or Municipal Highway Agency.