US Bridges

Idaho RD 15.4-O.0 over Stream

Good

Allen County, Kansas · 6.0S 2.4E of LA Harpe · Structure no. 000011045405980

Built
1930
95 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
34 ft
4 main spans
Daily traffic
50
2006 count
Owner
County
County Highway Agency

About this bridge

Idaho RD 15.4-O.0 over Stream is a concrete culvert carrying Idaho RD 15.4-O.0 over Stream in Allen 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.

It carries about 50 vehicles a day, projected to reach 50 by 2044. The structure is 34 ft (10.5 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIdaho RD 15.4-O.0
CrossesStream
Location6.0S 2.4E of LA Harpe
RouteCounty Highway 0
CountyAllen County
StateKansas
Coordinates37.83457, -95.25393
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length34 ft (10.5 m)
Longest span8 ft (2.4 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2006)
Projected traffic50 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Idaho RD 15.4-O.0 over Stream built?

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

What condition is Idaho RD 15.4-O.0 over Stream 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 2024.

How much traffic does Idaho RD 15.4-O.0 over Stream carry?

About 50 vehicles per day (2006 count).

How long is Idaho RD 15.4-O.0 over Stream?

The structure is 34 ft (10.5 m) long with a longest span of 8 ft (2.4 m) and a deck 25 ft wide.

Who owns Idaho RD 15.4-O.0 over Stream?

It is owned by the County Highway Agency.