US Bridges

TR 239B over Branch Mackinaw R

Fair

McLean County, Illinois · 3.5 MI SE Anchor · Structure no. 057312800000000

Built
1983
42 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
51 ft
1 main span
Daily traffic
150
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 239B over Branch Mackinaw R is a concrete slab carrying TR 239B over Branch Mackinaw R in McLean County, Illinois. It was built in 1983, so it is 42 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 150 vehicles a day, roughly 51% of them trucks, projected to reach 101 by 2046. The structure is 51 ft (15.5 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR 239B
CrossesBranch Mackinaw R
Location3.5 MI SE Anchor
RouteCounty Highway 0
CountyMcLean County
StateIllinois
Coordinates40.51512, -88.49722
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span47 ft (14.3 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic101 by 2046
Trucks51%
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 239B over Branch Mackinaw R built?

It was built in 1983, making it 42 years old in 2025.

What condition is TR 239B over Branch Mackinaw R in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does TR 239B over Branch Mackinaw R carry?

About 150 vehicles per day (2024 count), of which roughly 51% are trucks.

How long is TR 239B over Branch Mackinaw R?

The structure is 51 ft (15.5 m) long with a longest span of 47 ft (14.3 m) and a deck 36 ft wide.

Who owns TR 239B over Branch Mackinaw R?

It is owned by the Town or Township Highway Agency.