US Bridges

TR 236 over Unnamed Creek

Good

Rock Island County, Illinois · 3 MI NW Hilsdale · Structure no. 081312800000000

Built
2012
13 years old
Condition
Good
inspected November 2022
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
75
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 236 over Unnamed Creek is a concrete culvert carrying TR 236 over Unnamed Creek in Rock Island County, Illinois. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, roughly 40% of them trucks, projected to reach 76 by 2046. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTR 236
CrossesUnnamed Creek
Location3 MI NW Hilsdale
RouteCounty Highway 0
Coordinates41.63463, -90.19994
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2020)
Projected traffic76 by 2046
Trucks40%
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 TR 236 over Unnamed Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is TR 236 over Unnamed 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 November 2022.

How much traffic does TR 236 over Unnamed Creek carry?

About 75 vehicles per day (2020 count), of which roughly 40% are trucks.

How long is TR 236 over Unnamed Creek?

The structure is 24 ft (7.2 m) long with a longest span of 12 ft (3.7 m).

Who owns TR 236 over Unnamed Creek?

It is owned by the Town or Township Highway Agency.