US Bridges

County RD U over I-35 Highway

Fair

Lyon County, Kansas · 7.82 MI East of K-99 · Structure no. 999903500561261

Built
1976
49 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
269 ft
4 main spans
Daily traffic
278
2023 count
Owner
State
State Highway Agency

About this bridge

County RD U over I-35 Highway is a concrete continuous box beam or girders - multiple carrying County RD U over I-35 Highway in Lyon County, Kansas. It was built in 1976, so it is 49 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 278 vehicles a day, roughly 3% of them trucks. The structure is 269 ft (81.9 m) long and 37 ft wide.

CarriesCounty RD U
CrossesI-35 Highway
Location7.82 MI East of K-99
RouteCounty Highway 1508
StateKansas
Coordinates38.41028, -96.0425
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating63.8 US tons
Inventory rating38.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length269 ft (81.9 m)
Longest span92 ft (28 m)
Deck width37 ft (11.4 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic278 (2023)
Projected traffic—
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 County RD U over I-35 Highway built?

It was built in 1976, making it 49 years old in 2025.

What condition is County RD U over I-35 Highway 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 June 2024.

How much traffic does County RD U over I-35 Highway carry?

About 278 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County RD U over I-35 Highway?

The structure is 269 ft (81.9 m) long with a longest span of 92 ft (28 m) and a deck 37 ft wide.

Who owns County RD U over I-35 Highway?

It is owned by the State Highway Agency.