US Bridges

Iowa RD 13.1-N.0 over Stream

Good

Allen County, Kansas · 5.0S of LA Harpe · Structure no. 000011041105960

Built
1930
95 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
50
2006 count
Owner
County
County Highway Agency

About this bridge

Iowa RD 13.1-N.0 over Stream is a concrete continuous slab carrying Iowa RD 13.1-N.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 22 ft (6.7 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIowa RD 13.1-N.0
CrossesStream
Location5.0S of LA Harpe
RouteCounty Highway 110
CountyAllen County
StateKansas
Coordinates37.84916, -95.29901
Functional classRural Minor Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3.2 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$103,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Iowa RD 13.1-N.0 over Stream built?

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

What condition is Iowa RD 13.1-N.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 Iowa RD 13.1-N.0 over Stream carry?

About 50 vehicles per day (2006 count).

How long is Iowa RD 13.1-N.0 over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m) and a deck 29 ft wide.

Who owns Iowa RD 13.1-N.0 over Stream?

It is owned by the County Highway Agency.