US Bridges

SW 77 A. L.2-19.5 over Chikaskia River

PoorPosted for load

Kingman County, Kansas · 1.5N 1.2E of Zenda · Structure no. 000480719206485

Built
1970
55 years old
Condition
Poor
inspected January 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
94 ft
4 main spans
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

SW 77 A. L.2-19.5 over Chikaskia River is a wood or timber stringer/multi-beam or girder carrying SW 77 A. L.2-19.5 over Chikaskia River in Kingman County, Kansas. It was built in 1970, so it is 55 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 10 vehicles a day, roughly 5% of them trucks, projected to reach 12 by 2043. The structure is 94 ft (28.7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSW 77 A. L.2-19.5
CrossesChikaskia River
Location1.5N 1.2E of Zenda
RouteCounty Highway 0
StateKansas
Coordinates37.464, -98.25928
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating33.3 US tons
Inventory rating20.8 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length94 ft (28.7 m)
Longest span23 ft (7.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic12 by 2043
Trucks5%
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 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 SW 77 A. L.2-19.5 over Chikaskia River built?

It was built in 1970, making it 55 years old in 2025.

What condition is SW 77 A. L.2-19.5 over Chikaskia 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 January 2023.

How much traffic does SW 77 A. L.2-19.5 over Chikaskia River carry?

About 10 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is SW 77 A. L.2-19.5 over Chikaskia River?

The structure is 94 ft (28.7 m) long with a longest span of 23 ft (7.1 m) and a deck 24 ft wide.

Who owns SW 77 A. L.2-19.5 over Chikaskia River?

It is owned by the County Highway Agency.