US Bridges

Z Road over N. Fork Cimarron River

GoodPosted for load

Morton County, Kansas · 5.0N 10.0E of Richfield · Structure no. 000000000650030

Built
1966
59 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete Continuous
Length
227 ft
6 main spans
Daily traffic
210
2022 count
Owner
County
County Highway Agency

About this bridge

Z Road over N. Fork Cimarron River is a concrete continuous slab carrying Z Road over N. Fork Cimarron River in Morton County, Kansas. It was built in 1966, so it is 59 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. Its operating status is: posted for load restriction.

It carries about 210 vehicles a day, roughly 10% of them trucks, projected to reach 450 by 2041. The structure is 227 ft (69.3 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesZ Road
CrossesN. Fork Cimarron River
Location5.0N 10.0E of Richfield
RouteCounty Highway 480
CountyMorton County
StateKansas
Coordinates37.33039, -101.59958
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.4 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length227 ft (69.3 m)
Longest span40 ft (12.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic210 (2022)
Projected traffic450 by 2041
Trucks10%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Z Road over N. Fork Cimarron River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Z Road over N. Fork Cimarron River 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 November 2023.

How much traffic does Z Road over N. Fork Cimarron River carry?

About 210 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Z Road over N. Fork Cimarron River?

The structure is 227 ft (69.3 m) long with a longest span of 40 ft (12.1 m) and a deck 26 ft wide.

Who owns Z Road over N. Fork Cimarron River?

It is owned by the County Highway Agency.