US Bridges

N-12.4 103 over Mill Creek

Good

Washington County, Kansas · 0.7S 2.5E of Morrowville · Structure no. 001010843003226

Built
1995
30 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
138 ft
3 main spans
Daily traffic
20
2014 count
Owner
County
County Highway Agency

About this bridge

N-12.4 103 over Mill Creek is a steel stringer/multi-beam or girder carrying N-12.4 103 over Mill Creek in Washington County, Kansas. It was built in 1995, so it is 30 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 20 vehicles a day, projected to reach 25 by 2043. The structure is 138 ft (42.1 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN-12.4 103
CrossesMill Creek
Location0.7S 2.5E of Morrowville
RouteCounty Highway 0
CountyWashington County
StateKansas
Coordinates39.83664, -97.12447
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.1 US tons
Inventory rating34.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length138 ft (42.1 m)
Longest span58 ft (17.7 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2014)
Projected traffic25 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 N-12.4 103 over Mill Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is N-12.4 103 over Mill 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 March 2023.

How much traffic does N-12.4 103 over Mill Creek carry?

About 20 vehicles per day (2014 count).

How long is N-12.4 103 over Mill Creek?

The structure is 138 ft (42.1 m) long with a longest span of 58 ft (17.7 m) and a deck 27 ft wide.

Who owns N-12.4 103 over Mill Creek?

It is owned by the County Highway Agency.