US Bridges

320th St. over Trib. to Pony Creek

Good

Brown County, Kansas · 2.7N 0.8E of Morrill · Structure no. 000070995803040

Built
1984
41 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
40
2016 count
Owner
County
County Highway Agency

About this bridge

320th St. over Trib. to Pony Creek is a concrete culvert carrying 320th St. over Trib. to Pony Creek in Brown County, Kansas. It was built in 1984, so it is 41 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 40 vehicles a day, projected to reach 44 by 2044. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries320th St.
CrossesTrib. to Pony Creek
Location2.7N 0.8E of Morrill
RouteCounty Highway 0
CountyBrown County
StateKansas
Coordinates39.97176, -95.67571
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2016)
Projected traffic44 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$55,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 320th St. over Trib. to Pony Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is 320th St. over Trib. to Pony 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 2024.

How much traffic does 320th St. over Trib. to Pony Creek carry?

About 40 vehicles per day (2016 count).

How long is 320th St. over Trib. to Pony Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns 320th St. over Trib. to Pony Creek?

It is owned by the County Highway Agency.