US Bridges

TR 85A over Bayou

Good

Livingston County, Illinois · 965 E 2350N · Structure no. 053411800000000

Built
1991
34 years old
Condition
Good
inspected August 2023
Type
Channel Beam
Concrete
Length
92 ft
3 main spans
Daily traffic
20
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 85A over Bayou is a concrete channel beam carrying TR 85A over Bayou in Livingston County, Illinois. It was built in 1991, so it is 34 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 20 vehicles a day, roughly 20% of them trucks, projected to reach 101 by 2046. The structure is 92 ft (28 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesTR 85A
CrossesBayou
Location965 E 2350N
RouteCounty Highway 0
CountyLivingston County
StateIllinois
Coordinates40.9676, -88.74596
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length92 ft (28 m)
Longest span29 ft (8.9 m)
Deck width26 ft (8 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic101 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 85A over Bayou built?

It was built in 1991, making it 34 years old in 2025.

What condition is TR 85A over Bayou 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 August 2023.

How much traffic does TR 85A over Bayou carry?

About 20 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is TR 85A over Bayou?

The structure is 92 ft (28 m) long with a longest span of 29 ft (8.9 m) and a deck 26 ft wide.

Who owns TR 85A over Bayou?

It is owned by the Town or Township Highway Agency.