US Bridges

O-18.7 161 over Ash Creek

Fair

Washington County, Kansas · 1.1W 4.5N of Linn · Structure no. 001010845003347

Built
1925
100 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
35
2014 count
Owner
County
County Highway Agency

About this bridge

O-18.7 161 over Ash Creek is a steel stringer/multi-beam or girder carrying O-18.7 161 over Ash Creek in Washington County, Kansas. It was built in 1925, so it is 100 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.

It carries about 35 vehicles a day, projected to reach 42 by 2043. The structure is 33 ft (10 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesO-18.7 161
CrossesAsh Creek
Location1.1W 4.5N of Linn
RouteCounty Highway 0
CountyWashington County
StateKansas
Coordinates39.74577, -97.10601
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating44.4 US tons
Inventory rating26.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10 m)
Longest span31 ft (9.3 m)
Deck width22 ft (6.6 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic35 (2014)
Projected traffic42 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was O-18.7 161 over Ash Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is O-18.7 161 over Ash 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 March 2023.

How much traffic does O-18.7 161 over Ash Creek carry?

About 35 vehicles per day (2014 count).

How long is O-18.7 161 over Ash Creek?

The structure is 33 ft (10 m) long with a longest span of 31 ft (9.3 m) and a deck 22 ft wide.

Who owns O-18.7 161 over Ash Creek?

It is owned by the County Highway Agency.