US Bridges

US73 K7 HWY over Walnut Creek

Fair

Atchison County, Kansas · 4.19 MI S OF73/-59 JCT · Structure no. 999907300030151

Built
1969
56 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
173 ft
3 main spans
Daily traffic
3,283
2023 count
Owner
State
State Highway Agency

About this bridge

US73 K7 HWY over Walnut Creek is a concrete continuous tee beam carrying US73 K7 HWY over Walnut Creek in Atchison County, Kansas. It was built in 1969, so it is 56 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 3,283 vehicles a day, roughly 9% of them trucks, projected to reach 4,335 by 2044. The structure is 173 ft (52.6 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesUS73 K7 HWY
CrossesWalnut Creek
Location4.19 MI S OF73/-59 JCT
RouteU.S. Route 73
CountyAtchison County
StateKansas
Coordinates39.49833, -95.13194
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.6 US tons
Inventory rating36.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length173 ft (52.6 m)
Longest span70 ft (21.3 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,283 (2023)
Projected traffic4,335 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 US73 K7 HWY over Walnut Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is US73 K7 HWY over Walnut 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 US73 K7 HWY over Walnut Creek carry?

About 3,283 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US73 K7 HWY over Walnut Creek?

The structure is 173 ft (52.6 m) long with a longest span of 70 ft (21.3 m) and a deck 46 ft wide.

Who owns US73 K7 HWY over Walnut Creek?

It is owned by the State Highway Agency.