US Bridges

NW 80 Ave J-10.8 over West Branch Bluff Creek

FairPosted for load

Harper County, Kansas · 0.2N 2.0E of Attica · Structure no. 000390727006788

Built
1935
90 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
66 ft
4 main spans
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

NW 80 Ave J-10.8 over West Branch Bluff Creek is a wood or timber stringer/multi-beam or girder carrying NW 80 Ave J-10.8 over West Branch Bluff Creek in Harper County, Kansas. It was built in 1935, so it is 90 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 5 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 load restriction.

It carries about 10 vehicles a day, projected to reach 12 by 2043. The structure is 66 ft (20.1 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNW 80 Ave J-10.8
CrossesWest Branch Bluff Creek
Location0.2N 2.0E of Attica
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.24223, -98.18452
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating6.2 US tons
Inventory rating4.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadUnknown
Structure length66 ft (20.1 m)
Longest span16 ft (4.9 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic12 by 2043
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$350,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 80 Ave J-10.8 over West Branch Bluff Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is NW 80 Ave J-10.8 over West Branch Bluff 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 February 2023.

How much traffic does NW 80 Ave J-10.8 over West Branch Bluff Creek carry?

About 10 vehicles per day (2021 count).

How long is NW 80 Ave J-10.8 over West Branch Bluff Creek?

The structure is 66 ft (20.1 m) long with a longest span of 16 ft (4.9 m) and a deck 20 ft wide.

Who owns NW 80 Ave J-10.8 over West Branch Bluff Creek?

It is owned by the County Highway Agency.