US Bridges

31st S over Trib. to Lake Afton

Good

Sedgwick County, Kansas · 31STS 0.3 E of 247THW · Structure no. 000870789306260

Built
1998
27 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete Continuous
Length
118 ft
3 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

31st S over Trib. to Lake Afton is a concrete continuous slab carrying 31st S over Trib. to Lake Afton in Sedgwick County, Kansas. It was built in 1998, so it is 27 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 50 vehicles a day, projected to reach 80 by 2044. The structure is 118 ft (36 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries31st S
CrossesTrib. to Lake Afton
Location31STS 0.3 E of 247THW
RouteCounty Highway 0
CountySedgwick County
StateKansas
Coordinates37.63436, -97.61962
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 inspectionMay 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating73.3 US tons
Inventory rating43.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length118 ft (36 m)
Longest span45 ft (13.6 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 traffic50 (2022)
Projected traffic80 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 31st S over Trib. to Lake Afton built?

It was built in 1998, making it 27 years old in 2025.

What condition is 31st S over Trib. to Lake Afton 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 May 2024.

How much traffic does 31st S over Trib. to Lake Afton carry?

About 50 vehicles per day (2022 count).

How long is 31st S over Trib. to Lake Afton?

The structure is 118 ft (36 m) long with a longest span of 45 ft (13.6 m) and a deck 30 ft wide.

Who owns 31st S over Trib. to Lake Afton?

It is owned by the County Highway Agency.