US Bridges

RD 300 (H.7-300) over Unnamed Creek

GoodPosted for load

Lyon County, Kansas · 2.0W 4.0S of Allen · Structure no. 000560939804940

Built
2012
13 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
10
2007 count
Owner
County
County Highway Agency

About this bridge

RD 300 (H.7-300) over Unnamed Creek is a steel stringer/multi-beam or girder carrying RD 300 (H.7-300) over Unnamed Creek in Lyon County, Kansas. It was built in 2012, so it is 13 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. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 25 by 2043. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRD 300 (H.7-300)
CrossesUnnamed Creek
Location2.0W 4.0S of Allen
RouteCounty Highway 0
CountyLyon County
StateKansas
Coordinates38.5939, -96.2105
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span30 ft (9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2007)
Projected traffic25 by 2043
Trucks10%
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 RD 300 (H.7-300) over Unnamed Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is RD 300 (H.7-300) over Unnamed 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 300 (H.7-300) over Unnamed Creek carry?

About 10 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is RD 300 (H.7-300) over Unnamed Creek?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9 m) and a deck 24 ft wide.

Who owns RD 300 (H.7-300) over Unnamed Creek?

It is owned by the County Highway Agency.