US Bridges

TR-178 over Buck Creek

Good

Clay County, Illinois · 3 MI NW Flora · Structure no. 013500900000000

Built
1909
116 years old, rebuilt 1987
Condition
Good
inspected January 2023
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
75
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-178 over Buck Creek is a concrete culvert carrying TR-178 over Buck Creek in Clay County, Illinois. It was built in 1909 and reconstructed in 1987, so it is 116 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, roughly 3% of them trucks, projected to reach 76 by 2046. The structure is 41 ft (12.5 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR-178
CrossesBuck Creek
Location3 MI NW Flora
RouteCounty Highway 0
Coordinates38.71536, -88.52679
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span14 ft (4.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2021)
Projected traffic76 by 2046
Trucks3%
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-178 over Buck Creek built?

It was built in 1909, making it 116 years old in 2025. It was reconstructed in 1987.

What condition is TR-178 over Buck Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does TR-178 over Buck Creek carry?

About 75 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is TR-178 over Buck Creek?

The structure is 41 ft (12.5 m) long with a longest span of 14 ft (4.3 m) and a deck 26 ft wide.

Who owns TR-178 over Buck Creek?

It is owned by the Town or Township Highway Agency.