US Bridges

370 Ave (rs 1747) over Smoky Hill River

Good

Trego County, Kansas · 6.6S 12.0E Trego Center · Structure no. 000000000980470

Built
1978
47 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
187 ft
5 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

370 Ave (rs 1747) over Smoky Hill River is a concrete continuous slab carrying 370 Ave (rs 1747) over Smoky Hill River in Trego County, Kansas. It was built in 1978, so it is 47 years old, younger than the Kansas average of 52.8 years.

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

It carries about 40 vehicles a day, projected to reach 50 by 2043. The structure is 187 ft (57 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
Carries370 Ave (rs 1747)
CrossesSmoky Hill River
Location6.6S 12.0E Trego Center
RouteCounty Highway 1747
CountyTrego County
StateKansas
Coordinates38.78934, -99.67072
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length187 ft (57 m)
Longest span40 ft (12.1 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2020)
Projected traffic50 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 370 Ave (rs 1747) over Smoky Hill River built?

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

What condition is 370 Ave (rs 1747) over Smoky Hill River 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 June 2023.

How much traffic does 370 Ave (rs 1747) over Smoky Hill River carry?

About 40 vehicles per day (2020 count).

How long is 370 Ave (rs 1747) over Smoky Hill River?

The structure is 187 ft (57 m) long with a longest span of 40 ft (12.1 m) and a deck 28 ft wide.

Who owns 370 Ave (rs 1747) over Smoky Hill River?

It is owned by the County Highway Agency.