US Bridges

TR 146 (th-S 59) over Sandy Creek

Fair

Marshall County, Illinois · T30N-RIE-3PM Sec 10 · Structure no. 062455600000000

Built
1984
41 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
108 ft
3 main spans
Daily traffic
25
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 146 (th-S 59) over Sandy Creek is a prestressed concrete box beam or girders - multiple carrying TR 146 (th-S 59) over Sandy Creek in Marshall County, Illinois. It was built in 1984, so it is 41 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 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 25 vehicles a day, projected to reach 25 by 2046. The structure is 108 ft (32.9 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesTR 146 (th-S 59)
CrossesSandy Creek
LocationT30N-RIE-3PM Sec 10
RouteCounty Highway 0
CountyMarshall County
StateIllinois
Coordinates41.08428, -89.09554
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
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 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 typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 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 146 (th-S 59) over Sandy Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is TR 146 (th-S 59) over Sandy 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 146 (th-S 59) over Sandy Creek carry?

About 25 vehicles per day (2024 count).

How long is TR 146 (th-S 59) over Sandy Creek?

The structure is 108 ft (32.9 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns TR 146 (th-S 59) over Sandy Creek?

It is owned by the Town or Township Highway Agency.