US Bridges

TR-97A over Cottonwood Creek

Good

Clay County, Illinois · 2.5 MI NW Ingerham · Structure no. 013320400000000

Built
1992
33 years old
Condition
Good
inspected March 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
59 ft
2 main spans
Daily traffic
20
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-97A over Cottonwood Creek is a prestressed concrete box beam or girders - multiple carrying TR-97A over Cottonwood Creek in Clay 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 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 20 vehicles a day, roughly 5% of them trucks, projected to reach 20 by 2046. The structure is 59 ft (18 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR-97A
CrossesCottonwood Creek
Location2.5 MI NW Ingerham
RouteCounty Highway 0
Coordinates38.84884, -88.37609
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length59 ft (18 m)
Longest span34 ft (10.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2021)
Projected traffic20 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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-97A over Cottonwood Creek built?

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

What condition is TR-97A over Cottonwood Creek 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 March 2022.

How much traffic does TR-97A over Cottonwood Creek carry?

About 20 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is TR-97A over Cottonwood Creek?

The structure is 59 ft (18 m) long with a longest span of 34 ft (10.3 m) and a deck 24 ft wide.

Who owns TR-97A over Cottonwood Creek?

It is owned by the Town or Township Highway Agency.