US Bridges

TR-239A over Br. Mackinaw River

Good

McLean County, Illinois · 5.5 MI Ssw Colfax · Structure no. 057503900000000

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
31 ft
3 main spans
Daily traffic
50
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-239A over Br. Mackinaw River is a concrete continuous culvert carrying TR-239A over Br. Mackinaw River in McLean County, Illinois. It was built in 2017, so it is 8 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 50 vehicles a day, roughly 4% of them trucks, projected to reach 51 by 2046. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR-239A
CrossesBr. Mackinaw River
Location5.5 MI Ssw Colfax
RouteCounty Highway 0
CountyMcLean County
StateIllinois
Coordinates40.51451, -88.58824
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.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior 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 Continuous
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length31 ft (9.5 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic51 by 2046
Trucks4%
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-239A over Br. Mackinaw River built?

It was built in 2017, making it 8 years old in 2025.

What condition is TR-239A over Br. Mackinaw River 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 October 2023.

How much traffic does TR-239A over Br. Mackinaw River carry?

About 50 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is TR-239A over Br. Mackinaw River?

The structure is 31 ft (9.5 m) long with a longest span of 11 ft (3.3 m).

Who owns TR-239A over Br. Mackinaw River?

It is owned by the Town or Township Highway Agency.