US Bridges

12-P.1 109 over Trib. to Mill Creek

Fair

Washington County, Kansas · 4.6E of Morrowville · Structure no. 001010847103220

Built
1940
85 years old, rebuilt 1979
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
15
2014 count
Owner
County
County Highway Agency

About this bridge

12-P.1 109 over Trib. to Mill Creek is a steel stringer/multi-beam or girder carrying 12-P.1 109 over Trib. to Mill Creek in Washington County, Kansas. It was built in 1940 and reconstructed in 1979, so it is 85 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 15 vehicles a day, projected to reach 20 by 2043. The structure is 40 ft (12.2 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries12-P.1 109
CrossesTrib. to Mill Creek
Location4.6E of Morrowville
RouteCounty Highway 0
CountyWashington County
StateKansas
Coordinates39.84269, -97.0827
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating46.2 US tons
Inventory rating27.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span39 ft (11.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic15 (2014)
Projected traffic20 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 12-P.1 109 over Trib. to Mill Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1979.

What condition is 12-P.1 109 over Trib. to Mill 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 12-P.1 109 over Trib. to Mill Creek carry?

About 15 vehicles per day (2014 count).

How long is 12-P.1 109 over Trib. to Mill Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.8 m) and a deck 20 ft wide.

Who owns 12-P.1 109 over Trib. to Mill Creek?

It is owned by the County Highway Agency.