US Bridges

RD 330 939.4-488.0 over Stream

FairPosted for load

Lyon County, Kansas · 1.0S 2.5W of Allen · Structure no. 000560939404880

Built
1940
85 years old, rebuilt 2010
Condition
Fair
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 330 939.4-488.0 over Stream is a steel stringer/multi-beam or girder carrying RD 330 939.4-488.0 over Stream in Lyon County, Kansas. It was built in 1940 and reconstructed in 2010, so it is 85 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 5 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, projected to reach 10 by 2043. The structure is 31 ft (9.6 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesRD 330 939.4-488.0
CrossesStream
Location1.0S 2.5W of Allen
RouteCounty Highway 0
CountyLyon County
StateKansas
Coordinates38.63708, -96.21883
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating19.8 US tons
Inventory rating11.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length31 ft (9.6 m)
Longest span30 ft (9 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.2 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 closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$58,000
NavigationNo navigation control on waterway

Frequently asked questions

When was RD 330 939.4-488.0 over Stream built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2010.

What condition is RD 330 939.4-488.0 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 RD 330 939.4-488.0 over Stream carry?

About 10 vehicles per day (2007 count).

How long is RD 330 939.4-488.0 over Stream?

The structure is 31 ft (9.6 m) long with a longest span of 30 ft (9 m) and a deck 20 ft wide.

Who owns RD 330 939.4-488.0 over Stream?

It is owned by the County Highway Agency.