US Bridges

SW 100th -Se 7 Ave over Walnut River

Fair

Butler County, Kansas · 0.7 E of Augusta · Structure no. 000080861706200

Built
1937
88 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
456 ft
5 main spans
Daily traffic
500
2023 count
Owner
County
County Highway Agency

About this bridge

SW 100th -Se 7 Ave over Walnut River is a steel continuous stringer/multi-beam or girder carrying SW 100th -Se 7 Ave over Walnut River in Butler County, Kansas. It was built in 1937, so it is 88 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.

It carries about 500 vehicles a day, roughly 1% of them trucks, projected to reach 600 by 2045. The structure is 456 ft (139 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSW 100th -Se 7 Ave
CrossesWalnut River
Location0.7 E of Augusta
RouteCounty Highway 818
CountyButler County
StateKansas
Coordinates37.67926, -96.95747
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating62.6 US tons
Inventory rating37.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length456 ft (139 m)
Longest span110 ft (33.5 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 traffic500 (2023)
Projected traffic600 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 SW 100th -Se 7 Ave over Walnut River built?

It was built in 1937, making it 88 years old in 2025.

What condition is SW 100th -Se 7 Ave over Walnut River 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 February 2025.

How much traffic does SW 100th -Se 7 Ave over Walnut River carry?

About 500 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is SW 100th -Se 7 Ave over Walnut River?

The structure is 456 ft (139 m) long with a longest span of 110 ft (33.5 m) and a deck 28 ft wide.

Who owns SW 100th -Se 7 Ave over Walnut River?

It is owned by the County Highway Agency.