US Bridges

TR 35 a over Lake Fork Branch

Fair

Shelby County, Illinois · 4.1 M NW Yantisville · Structure no. 087501400000000

Built
1939
86 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
50
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 35 a over Lake Fork Branch is a concrete culvert carrying TR 35 a over Lake Fork Branch in Shelby County, Illinois. It was built in 1939, so it is 86 years old, older 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 5 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 76 by 2046. The structure is 28 ft (8.5 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR 35 a
CrossesLake Fork Branch
Location4.1 M NW Yantisville
RouteCounty Highway 0
CountyShelby County
StateIllinois
Coordinates39.56617, -88.96447
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span9 ft (2.6 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic76 by 2046
Trucks2%
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 35 a over Lake Fork Branch built?

It was built in 1939, making it 86 years old in 2025.

What condition is TR 35 a over Lake Fork Branch 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 April 2023.

How much traffic does TR 35 a over Lake Fork Branch carry?

About 50 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is TR 35 a over Lake Fork Branch?

The structure is 28 ft (8.5 m) long with a longest span of 9 ft (2.6 m) and a deck 26 ft wide.

Who owns TR 35 a over Lake Fork Branch?

It is owned by the Town or Township Highway Agency.