US Bridges

TR 422 over Hooper Br

Good

Iroquois County, Illinois · 1.5 MI N Ch 3 · Structure no. 038343300000000

Built
1957
68 years old, rebuilt 2011
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
35 ft
1 main span
Daily traffic
25
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 422 over Hooper Br is a concrete slab carrying TR 422 over Hooper Br in Iroquois County, Illinois. It was built in 1957 and reconstructed in 2011, so it is 68 years old, older 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 25 vehicles a day, projected to reach 25 by 2046. The structure is 35 ft (10.7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 422
CrossesHooper Br
Location1.5 MI N Ch 3
RouteCounty Highway 0
CountyIroquois County
StateIllinois
Coordinates40.97091, -87.58004
Functional classRural Local

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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length35 ft (10.7 m)
Longest span31 ft (9.4 m)
Deck width24 ft (7.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic25 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 422 over Hooper Br built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2011.

What condition is TR 422 over Hooper Br 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 August 2023.

How much traffic does TR 422 over Hooper Br carry?

About 25 vehicles per day (2022 count).

How long is TR 422 over Hooper Br?

The structure is 35 ft (10.7 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.

Who owns TR 422 over Hooper Br?

It is owned by the Town or Township Highway Agency.