US Bridges

Cty RD L 945-478.4 over Stream

Fair

Lyon County, Kansas · 3.0N of Allen · Structure no. 000000000560260

Built
1959
66 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
25
2007 count
Owner
County
County Highway Agency

About this bridge

Cty RD L 945-478.4 over Stream is a concrete culvert carrying Cty RD L 945-478.4 over Stream in Lyon County, Kansas. It was built in 1959, so it is 66 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.

It carries about 25 vehicles a day, projected to reach 30 by 2043. The structure is 23 ft (7 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCty RD L 945-478.4
CrossesStream
Location3.0N of Allen
RouteCounty Highway 415
CountyLyon County
StateKansas
Coordinates38.70369, -96.16797
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating52.7 US tons
Inventory rating31.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic25 (2007)
Projected traffic30 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cty RD L 945-478.4 over Stream built?

It was built in 1959, making it 66 years old in 2025.

What condition is Cty RD L 945-478.4 over Stream 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 February 2023.

How much traffic does Cty RD L 945-478.4 over Stream carry?

About 25 vehicles per day (2007 count).

How long is Cty RD L 945-478.4 over Stream?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 31 ft wide.

Who owns Cty RD L 945-478.4 over Stream?

It is owned by the County Highway Agency.