US Bridges

TR 235 over Prairie Fork

Fair

Christian County, Illinois · 1.5MI N Palmer · Structure no. 011339900000000

Built
2005
20 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
94 ft
2 main spans
Daily traffic
100
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 235 over Prairie Fork is a prestressed concrete box beam or girders - multiple carrying TR 235 over Prairie Fork in Christian County, Illinois. It was built in 2005, so it is 20 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 100 vehicles a day, roughly 20% of them trucks, projected to reach 101 by 2046. The structure is 94 ft (28.7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 235
CrossesPrairie Fork
Location1.5MI N Palmer
RouteCounty Highway 0
CountyChristian County
StateIllinois
Coordinates39.48048, -89.43297
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length94 ft (28.7 m)
Longest span49 ft (14.8 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic101 by 2046
Trucks20%
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 235 over Prairie Fork built?

It was built in 2005, making it 20 years old in 2025.

What condition is TR 235 over Prairie Fork 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 November 2023.

How much traffic does TR 235 over Prairie Fork carry?

About 100 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is TR 235 over Prairie Fork?

The structure is 94 ft (28.7 m) long with a longest span of 49 ft (14.8 m) and a deck 24 ft wide.

Who owns TR 235 over Prairie Fork?

It is owned by the Town or Township Highway Agency.