US Bridges

SW 80th over Walnut River

PoorPosted for load

Butler County, Kansas · 3.6E 2.0N of Augusta · Structure no. 000080867106160

Built
1930
95 years old
Condition
Poor
inspected July 2024
Type
Tee Beam
Concrete
Length
175 ft
4 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

SW 80th over Walnut River is a concrete tee beam carrying SW 80th over Walnut River in Butler County, Kansas. It was built in 1930, so it is 95 years old, older than the Kansas average of 52.8 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 50 by 2045. The structure is 175 ft (53.3 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSW 80th
CrossesWalnut River
Location3.6E 2.0N of Augusta
RouteCounty Highway 0
CountyButler County
StateKansas
Coordinates37.70839, -96.91528
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating28 US tons
Inventory rating16.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length175 ft (53.3 m)
Longest span42 ft (12.8 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2023)
Projected traffic50 by 2045
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 80th over Walnut River built?

It was built in 1930, making it 95 years old in 2025.

What condition is SW 80th over Walnut River 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 July 2024.

How much traffic does SW 80th over Walnut River carry?

About 50 vehicles per day (2023 count).

How long is SW 80th over Walnut River?

The structure is 175 ft (53.3 m) long with a longest span of 42 ft (12.8 m) and a deck 22 ft wide.

Who owns SW 80th over Walnut River?

It is owned by the County Highway Agency.