US Bridges

F-8.1 79 over Bowman Creek

Good

Washington County, Kansas · 2.3E 2.9N of Haddam · Structure no. 001010827003141

Built
1987
38 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
113 ft
3 main spans
Daily traffic
60
2014 count
Owner
County
County Highway Agency

About this bridge

F-8.1 79 over Bowman Creek is a concrete continuous slab carrying F-8.1 79 over Bowman Creek in Washington County, Kansas. It was built in 1987, so it is 38 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 60 vehicles a day, projected to reach 72 by 2043. The structure is 113 ft (34.4 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesF-8.1 79
CrossesBowman Creek
Location2.3E 2.9N of Haddam
RouteCounty Highway 10105
CountyWashington County
StateKansas
Coordinates39.89887, -97.27572
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length113 ft (34.4 m)
Longest span44 ft (13.4 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 traffic60 (2014)
Projected traffic72 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 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 F-8.1 79 over Bowman Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is F-8.1 79 over Bowman Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does F-8.1 79 over Bowman Creek carry?

About 60 vehicles per day (2014 count).

How long is F-8.1 79 over Bowman Creek?

The structure is 113 ft (34.4 m) long with a longest span of 44 ft (13.4 m) and a deck 28 ft wide.

Who owns F-8.1 79 over Bowman Creek?

It is owned by the County Highway Agency.