US Bridges

21st Rd. over Little Arkansas River

Good

Rice County, Kansas · 2.6E 3.5S of Geneseo · Structure no. 000800737005108

Built
2016
9 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
25
2021 count
Owner
County
County Highway Agency

About this bridge

21st Rd. over Little Arkansas River is a concrete continuous slab carrying 21st Rd. over Little Arkansas River in Rice County, Kansas. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, roughly 5% of them trucks, projected to reach 30 by 2044. The structure is 82 ft (25.1 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries21st Rd.
CrossesLittle Arkansas River
Location2.6E 3.5S of Geneseo
RouteCounty Highway 797
StateKansas
Coordinates38.46491, -98.10885
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.2 US tons
Inventory rating64 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length82 ft (25.1 m)
Longest span32 ft (9.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic25 (2021)
Projected traffic30 by 2044
Trucks5%
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 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 21st Rd. over Little Arkansas River built?

It was built in 2016, making it 9 years old in 2025.

What condition is 21st Rd. over Little Arkansas 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 September 2024.

How much traffic does 21st Rd. over Little Arkansas River carry?

About 25 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 21st Rd. over Little Arkansas River?

The structure is 82 ft (25.1 m) long with a longest span of 32 ft (9.7 m) and a deck 30 ft wide.

Who owns 21st Rd. over Little Arkansas River?

It is owned by the County Highway Agency.