US Bridges

RD 310 (K.7-310) over Dow Creek

GoodPosted for load

Lyon County, Kansas · 3.0S of Allen · Structure no. 000560943504920

Built
1930
95 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
10
2007 count
Owner
County
County Highway Agency

About this bridge

RD 310 (K.7-310) over Dow Creek is a concrete culvert carrying RD 310 (K.7-310) over Dow Creek in Lyon County, Kansas. It was built in 1930, so it is 95 years old, older 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. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, projected to reach 10 by 2043. The structure is 31 ft (9.5 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesRD 310 (K.7-310)
CrossesDow Creek
Location3.0S of Allen
RouteCounty Highway 0
CountyLyon County
StateKansas
Coordinates38.60781, -96.17733
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length31 ft (9.5 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2007)
Projected traffic10 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 RD 310 (K.7-310) over Dow Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is RD 310 (K.7-310) over Dow 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 February 2023.

How much traffic does RD 310 (K.7-310) over Dow Creek carry?

About 10 vehicles per day (2007 count).

How long is RD 310 (K.7-310) over Dow Creek?

The structure is 31 ft (9.5 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns RD 310 (K.7-310) over Dow Creek?

It is owned by the County Highway Agency.