US Bridges

Local N-3.1 over Trib. to Porcupine Ck.

Good

Jewell County, Kansas · 5.0N 0.1E of Dentonia · Structure no. 000450701103340

Built
1999
26 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
66 ft
3 main spans
Daily traffic
20
2018 count
Owner
County
County Highway Agency

About this bridge

Local N-3.1 over Trib. to Porcupine Ck. is a steel continuous stringer/multi-beam or girder carrying Local N-3.1 over Trib. to Porcupine Ck. in Jewell County, Kansas. It was built in 1999, so it is 26 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 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 20 vehicles a day, projected to reach 20 by 2043. The structure is 66 ft (20 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal N-3.1
CrossesTrib. to Porcupine Ck.
Location5.0N 0.1E of Dentonia
RouteCounty Highway 0
CountyJewell County
StateKansas
Coordinates39.75597, -98.46417
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length66 ft (20 m)
Longest span23 ft (7.1 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2018)
Projected traffic20 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$200,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local N-3.1 over Trib. to Porcupine Ck. built?

It was built in 1999, making it 26 years old in 2025.

What condition is Local N-3.1 over Trib. to Porcupine Ck. 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 March 2023.

How much traffic does Local N-3.1 over Trib. to Porcupine Ck. carry?

About 20 vehicles per day (2018 count).

How long is Local N-3.1 over Trib. to Porcupine Ck.?

The structure is 66 ft (20 m) long with a longest span of 23 ft (7.1 m) and a deck 27 ft wide.

Who owns Local N-3.1 over Trib. to Porcupine Ck.?

It is owned by the County Highway Agency.