US Bridges

TR 171(OAK Crest R over Trib to Clear Lake

Good

Sangamon County, Illinois · 1.3 M SE of Riverton · Structure no. 084503000000000

Built
2020
5 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
22 ft
Daily traffic
175
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 171(OAK Crest R over Trib to Clear Lake is a concrete continuous culvert carrying TR 171(OAK Crest R over Trib to Clear Lake in Sangamon County, Illinois. It was built in 2020, so it is 5 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 175 vehicles a day, roughly 13% of them trucks, projected to reach 556 by 2046. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 171(OAK Crest R
CrossesTrib to Clear Lake
Location1.3 M SE of Riverton
RouteCounty Highway 0
CountySangamon County
StateIllinois
Coordinates39.82584, -89.51628
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating47.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans0
Design loadHS 25 or greater
Structure length22 ft (6.8 m)
Longest span0 ft (0 m)
Deck width0 ft (0 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2022)
Projected traffic556 by 2046
Trucks13%
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 171(OAK Crest R over Trib to Clear Lake built?

It was built in 2020, making it 5 years old in 2025.

What condition is TR 171(OAK Crest R over Trib to Clear Lake 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 April 2023.

How much traffic does TR 171(OAK Crest R over Trib to Clear Lake carry?

About 175 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is TR 171(OAK Crest R over Trib to Clear Lake?

The structure is 22 ft (6.8 m) long.

Who owns TR 171(OAK Crest R over Trib to Clear Lake?

It is owned by the Town or Township Highway Agency.