US Bridges

TR 147 (TH-D17) over Hallenback Creek

Fair

Marshall County, Illinois · T29N-R1W-3PM Sec 35 · Structure no. 062474400000000

Built
1978
47 years old
Condition
Fair
inspected April 2023
Type
Channel Beam
Concrete
Length
80 ft
3 main spans
Daily traffic
25
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 147 (TH-D17) over Hallenback Creek is a concrete channel beam carrying TR 147 (TH-D17) over Hallenback Creek in Marshall County, Illinois. It was built in 1978, so it is 47 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 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 25 vehicles a day, projected to reach 25 by 2046. The structure is 80 ft (24.4 m) long and 26 ft wide.

Location

Open in Google Maps
CarriesTR 147 (TH-D17)
CrossesHallenback Creek
LocationT29N-R1W-3PM Sec 35
RouteCounty Highway 0
CountyMarshall County
StateIllinois
Coordinates40.93802, -89.19516
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length80 ft (24.4 m)
Longest span38 ft (11.6 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic25 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 147 (TH-D17) over Hallenback Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is TR 147 (TH-D17) over Hallenback Creek 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 147 (TH-D17) over Hallenback Creek carry?

About 25 vehicles per day (2024 count).

How long is TR 147 (TH-D17) over Hallenback Creek?

The structure is 80 ft (24.4 m) long with a longest span of 38 ft (11.6 m) and a deck 26 ft wide.

Who owns TR 147 (TH-D17) over Hallenback Creek?

It is owned by the Town or Township Highway Agency.