US Bridges

380 Ave (rs 1147) over Big Creek

FairPosted for load

Trego County, Kansas · 2.7N 13.0E Trego Center · Structure no. 000000000980520

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
332 ft
7 main spans
Daily traffic
130
2020 count
Owner
County
County Highway Agency

About this bridge

380 Ave (rs 1147) over Big Creek is a concrete continuous tee beam carrying 380 Ave (rs 1147) over Big Creek in Trego County, Kansas. It was built in 1960, so it is 65 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 130 vehicles a day, roughly 10% of them trucks, projected to reach 140 by 2043. The structure is 332 ft (101.2 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries380 Ave (rs 1147)
CrossesBig Creek
Location2.7N 13.0E Trego Center
RouteCounty Highway 1747
CountyTrego County
StateKansas
Coordinates38.9235, -99.65099
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating19.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length332 ft (101.2 m)
Longest span50 ft (15.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic130 (2020)
Projected traffic140 by 2043
Trucks10%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$635,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 380 Ave (rs 1147) over Big Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is 380 Ave (rs 1147) over Big 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 June 2023.

How much traffic does 380 Ave (rs 1147) over Big Creek carry?

About 130 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 380 Ave (rs 1147) over Big Creek?

The structure is 332 ft (101.2 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns 380 Ave (rs 1147) over Big Creek?

It is owned by the County Highway Agency.