US Bridges

RS1471 K31 HWY over I35 HWY Nl-Sl

Fair

Osage County, Kansas · Wjct K31/I35 · Structure no. 999903100700061

Built
1973
52 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
287 ft
4 main spans
Daily traffic
590
2023 count
Owner
State
State Highway Agency

About this bridge

RS1471 K31 HWY over I35 HWY Nl-Sl is a concrete continuous box beam or girders - multiple carrying RS1471 K31 HWY over I35 HWY Nl-Sl in Osage County, Kansas. It was built in 1973, so it is 52 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 590 vehicles a day, roughly 7% of them trucks, projected to reach 639 by 2044. The structure is 287 ft (87.4 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRS1471 K31 HWY
CrossesI35 HWY Nl-Sl
LocationWjct K31/I35
RouteState Highway 31
CountyOsage County
StateKansas
Coordinates38.44833, -95.63694
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating65.7 US tons
Inventory rating39.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length287 ft (87.4 m)
Longest span89 ft (27.1 m)
Deck width37 ft (11.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic590 (2023)
Projected traffic639 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 RS1471 K31 HWY over I35 HWY Nl-Sl built?

It was built in 1973, making it 52 years old in 2025.

What condition is RS1471 K31 HWY over I35 HWY Nl-Sl in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does RS1471 K31 HWY over I35 HWY Nl-Sl carry?

About 590 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is RS1471 K31 HWY over I35 HWY Nl-Sl?

The structure is 287 ft (87.4 m) long with a longest span of 89 ft (27.1 m) and a deck 37 ft wide.

Who owns RS1471 K31 HWY over I35 HWY Nl-Sl?

It is owned by the State Highway Agency.