US Bridges

TR 7 over No. Br. Rock Creek

Fair

Kankakee County, Illinois · 3 MI NW Manteno · Structure no. 046341700000000

Built
1984
41 years old
Condition
Fair
inspected June 2024
Type
Channel Beam
Concrete
Length
80 ft
3 main spans
Daily traffic
25
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 7 over No. Br. Rock Creek is a concrete channel beam carrying TR 7 over No. Br. Rock Creek in Kankakee County, Illinois. It was built in 1984, so it is 41 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 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 25 vehicles a day, projected to reach 26 by 2046. The structure is 80 ft (24.4 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 7
CrossesNo. Br. Rock Creek
Location3 MI NW Manteno
RouteCounty Highway 0
CountyKankakee County
StateIllinois
Coordinates41.27947, -87.8653
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span26 ft (7.9 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2021)
Projected traffic26 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 TR 7 over No. Br. Rock Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is TR 7 over No. Br. 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 2024.

How much traffic does TR 7 over No. Br. Rock Creek carry?

About 25 vehicles per day (2021 count).

How long is TR 7 over No. Br. Rock Creek?

The structure is 80 ft (24.4 m) long with a longest span of 26 ft (7.9 m) and a deck 26 ft wide.

Who owns TR 7 over No. Br. Rock Creek?

It is owned by the Town or Township Highway Agency.