US Bridges

TR 34 over W Fork Spoon River

Poor

Bureau County, Illinois · 3 MI S of Neponset · Structure no. 006425700000000

Built
1965
60 years old
Condition
Poor
inspected November 2023
Type
Channel Beam
Concrete
Length
48 ft
3 main spans
Daily traffic
25
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 34 over W Fork Spoon River is a concrete channel beam carrying TR 34 over W Fork Spoon River in Bureau County, Illinois. It was built in 1965, so it is 60 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 25 vehicles a day, projected to reach 25 by 2046. The structure is 48 ft (14.6 m) long and 23 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesTR 34
CrossesW Fork Spoon River
Location3 MI S of Neponset
RouteCounty Highway 0
CountyBureau County
StateIllinois
Coordinates41.25066, -89.80915
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length48 ft (14.6 m)
Longest span15 ft (4.7 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2010)
Projected traffic25 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 34 over W Fork Spoon River built?

It was built in 1965, making it 60 years old in 2025.

What condition is TR 34 over W Fork Spoon River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does TR 34 over W Fork Spoon River carry?

About 25 vehicles per day (2010 count).

How long is TR 34 over W Fork Spoon River?

The structure is 48 ft (14.6 m) long with a longest span of 15 ft (4.7 m) and a deck 23 ft wide.

Who owns TR 34 over W Fork Spoon River?

It is owned by the Town or Township Highway Agency.