US Bridges

RD 310 (G.8-310) over Allen Creek

Good

Lyon County, Kansas · 3.0S 3.3W of Allen · Structure no. 000560937704920

Built
2011
14 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete Continuous
Length
123 ft
3 main spans
Daily traffic
50
2007 count
Owner
County
County Highway Agency

About this bridge

RD 310 (G.8-310) over Allen Creek is a concrete continuous slab carrying RD 310 (G.8-310) over Allen Creek in Lyon County, Kansas. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 50 by 2043. The structure is 123 ft (37.6 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRD 310 (G.8-310)
CrossesAllen Creek
Location3.0S 3.3W of Allen
RouteCounty Highway 0
CountyLyon County
StateKansas
Coordinates38.60792, -96.22853
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length123 ft (37.6 m)
Longest span49 ft (14.9 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 traffic50 (2007)
Projected traffic50 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was RD 310 (G.8-310) over Allen Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is RD 310 (G.8-310) over Allen 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 (G.8-310) over Allen Creek carry?

About 50 vehicles per day (2007 count).

How long is RD 310 (G.8-310) over Allen Creek?

The structure is 123 ft (37.6 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns RD 310 (G.8-310) over Allen Creek?

It is owned by the County Highway Agency.