US Bridges

TR-173 over Trib Lost Creek Drai

Poor

Hamilton County, Illinois · 1.75 MI N Dolan Lake · Structure no. 033500600000000

Built
1981
44 years old
Condition
Poor
inspected May 2023
Type
Culvert
Concrete
Length
39 ft
3 main spans
Daily traffic
50
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-173 over Trib Lost Creek Drai is a concrete culvert carrying TR-173 over Trib Lost Creek Drai in Hamilton County, Illinois. It was built in 1981, so it is 44 years old, younger 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 50 vehicles a day, roughly 20% of them trucks, projected to reach 51 by 2046. The structure is 39 ft (11.8 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-173
CrossesTrib Lost Creek Drai
Location1.75 MI N Dolan Lake
RouteCounty Highway 0
CountyHamilton County
StateIllinois
Coordinates38.09301, -88.39126
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length39 ft (11.8 m)
Longest span13 ft (3.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic51 by 2046
Trucks20%
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-173 over Trib Lost Creek Drai built?

It was built in 1981, making it 44 years old in 2025.

What condition is TR-173 over Trib Lost Creek Drai 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 May 2023.

How much traffic does TR-173 over Trib Lost Creek Drai carry?

About 50 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is TR-173 over Trib Lost Creek Drai?

The structure is 39 ft (11.8 m) long with a longest span of 13 ft (3.9 m) and a deck 26 ft wide.

Who owns TR-173 over Trib Lost Creek Drai?

It is owned by the Town or Township Highway Agency.