US Bridges

Rs 446 Navaho Rd. over Blaze Fork Creek

Good

McPherson County, Kansas · 3.5N 1.4E of Conway · Structure no. 000000000590540

Built
1991
34 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
48 ft
5 main spans
Daily traffic
130
2020 count
Owner
County
County Highway Agency

About this bridge

Rs 446 Navaho Rd. over Blaze Fork Creek is a concrete culvert carrying Rs 446 Navaho Rd. over Blaze Fork Creek in McPherson County, Kansas. It was built in 1991, so it is 34 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 130 vehicles a day, roughly 12% of them trucks, projected to reach 200 by 2040. The structure is 48 ft (14.5 m) long. If it were closed, the detour would be 18 mi (29 km).

CarriesRs 446 Navaho Rd.
CrossesBlaze Fork Creek
Location3.5N 1.4E of Conway
RouteCounty Highway 446
StateKansas
Coordinates38.42022, -97.76292
Functional classRural Major Collector

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length48 ft (14.5 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic130 (2020)
Projected traffic200 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 446 Navaho Rd. over Blaze Fork Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Rs 446 Navaho Rd. over Blaze Fork Creek 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 January 2025.

How much traffic does Rs 446 Navaho Rd. over Blaze Fork Creek carry?

About 130 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is Rs 446 Navaho Rd. over Blaze Fork Creek?

The structure is 48 ft (14.5 m) long with a longest span of 9 ft (2.7 m).

Who owns Rs 446 Navaho Rd. over Blaze Fork Creek?

It is owned by the County Highway Agency.