US Bridges

Mw. 30th Road over Spring Creek

FairPosted for load

Harper County, Kansas · 0.8W 3.0N of Anthony · Structure no. 000390741206860

Built
1912
113 years old, rebuilt 1988
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

Mw. 30th Road over Spring Creek is a steel stringer/multi-beam or girder carrying Mw. 30th Road over Spring Creek in Harper County, Kansas. It was built in 1912 and reconstructed in 1988, so it is 113 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 6 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, roughly 5% of them trucks, projected to reach 10 by 2043. The structure is 50 ft (15.2 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMw. 30th Road
CrossesSpring Creek
Location0.8W 3.0N of Anthony
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.19552, -98.05181
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.3 US tons
Inventory rating8.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic10 by 2043
Trucks5%
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 Mw. 30th Road over Spring Creek built?

It was built in 1912, making it 113 years old in 2025. It was reconstructed in 1988.

What condition is Mw. 30th Road over Spring 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 May 2023.

How much traffic does Mw. 30th Road over Spring Creek carry?

About 10 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Mw. 30th Road over Spring Creek?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 25 ft wide.

Who owns Mw. 30th Road over Spring Creek?

It is owned by the County Highway Agency.