US Bridges

US 77 HWY NB over Walnut Riv & Local RD

FairPosted for load

Cowley County, Kansas · 1.12 MI S of JCT US160 · Structure no. 999907700180741

Built
1972
53 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
490 ft
5 main spans
Daily traffic
5,944
2023 count
Owner
State
State Highway Agency

About this bridge

US 77 HWY NB over Walnut Riv & Local RD is a steel continuous stringer/multi-beam or girder carrying US 77 HWY NB over Walnut Riv & Local RD in Cowley County, Kansas. It was built in 1972, so it is 53 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 other load-capacity restriction.

It carries about 5,944 vehicles a day, roughly 12% of them trucks, projected to reach 7,253 by 2044. The structure is 490 ft (149.5 m) long and 38 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS 77 HWY NB
CrossesWalnut Riv & Local RD
Location1.12 MI S of JCT US160
RouteU.S. Route 77
CountyCowley County
StateKansas
Coordinates37.22361, -96.99528
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length490 ft (149.5 m)
Longest span125 ft (38.1 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,944 (2023)
Projected traffic7,253 by 2044
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 77 HWY NB over Walnut Riv & Local RD built?

It was built in 1972, making it 53 years old in 2025.

What condition is US 77 HWY NB over Walnut Riv & Local RD 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 September 2023.

How much traffic does US 77 HWY NB over Walnut Riv & Local RD carry?

About 5,944 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 77 HWY NB over Walnut Riv & Local RD?

The structure is 490 ft (149.5 m) long with a longest span of 125 ft (38.1 m) and a deck 38 ft wide.

Who owns US 77 HWY NB over Walnut Riv & Local RD?

It is owned by the State Highway Agency.