US Bridges

TR 154 over Grove Creek

Poor

Hancock County, Illinois · 1.5 NW Adrian · Structure no. 034510800000000

Built
1965
60 years old
Condition
Poor
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
150
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 154 over Grove Creek is a prestressed concrete box beam or girders - multiple carrying TR 154 over Grove Creek in Hancock 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 150 vehicles a day, roughly 25% of them trucks, projected to reach 101 by 2046. The structure is 29 ft (8.9 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTR 154
CrossesGrove Creek
Location1.5 NW Adrian
RouteCounty Highway 0
Coordinates40.53866, -91.17684
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating38.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length29 ft (8.9 m)
Longest span28 ft (8.5 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic101 by 2046
Trucks25%
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 154 over Grove Creek built?

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

What condition is TR 154 over Grove Creek 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 December 2024.

How much traffic does TR 154 over Grove Creek carry?

About 150 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is TR 154 over Grove Creek?

The structure is 29 ft (8.9 m) long with a longest span of 28 ft (8.5 m) and a deck 24 ft wide.

Who owns TR 154 over Grove Creek?

It is owned by the Town or Township Highway Agency.