US Bridges

I-35 HWY NB over County Road R1

Good

Lyon County, Kansas · 4.94 MI East of K-99 · Structure no. 999903500561221

Built
1976
49 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
8,350
2023 count
Owner
State
State Highway Agency

About this bridge

I-35 HWY NB over County Road R1 is a concrete continuous slab carrying I-35 HWY NB over County Road R1 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 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 8,350 vehicles a day, roughly 23% of them trucks, projected to reach 9,226 by 2044. The structure is 142 ft (43.4 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-35 HWY NB
CrossesCounty Road R1
Location4.94 MI East of K-99
RouteInterstate 35
CountyLyon County
StateKansas
Coordinates38.41028, -96.09556
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length142 ft (43.4 m)
Longest span56 ft (17.1 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,350 (2023)
Projected traffic9,226 by 2044
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-35 HWY NB over County Road R1 built?

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

What condition is I-35 HWY NB over County Road R1 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 June 2024.

How much traffic does I-35 HWY NB over County Road R1 carry?

About 8,350 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I-35 HWY NB over County Road R1?

The structure is 142 ft (43.4 m) long with a longest span of 56 ft (17.1 m) and a deck 42 ft wide.

Who owns I-35 HWY NB over County Road R1?

It is owned by the State Highway Agency.