US Bridges

I-35 HWY NB over BNSF Railway

Fair

Lyon County, Kansas · 1.64 MI East of K-99 · Structure no. 999903500560151

Built
1966
59 years old, rebuilt 1994
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
234 ft
5 main spans
Daily traffic
7,803
2023 count
Owner
State
State Highway Agency

About this bridge

I-35 HWY NB over BNSF Railway is a concrete continuous slab carrying I-35 HWY NB over BNSF Railway in Lyon County, Kansas. It was built in 1966 and reconstructed in 1994, so it is 59 years old, older 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 7,803 vehicles a day, roughly 21% of them trucks, projected to reach 8,795 by 2044. The structure is 234 ft (71.4 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-35 HWY NB
CrossesBNSF Railway
Location1.64 MI East of K-99
RouteInterstate 35
CountyLyon County
StateKansas
Coordinates38.4125, -96.15583
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length234 ft (71.4 m)
Longest span62 ft (18.9 m)
Deck width52 ft (16 m)
Roadway width50 ft (15.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,803 (2023)
Projected traffic8,795 by 2044
Trucks21%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 BNSF Railway built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1994.

What condition is I-35 HWY NB over BNSF Railway 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 I-35 HWY NB over BNSF Railway carry?

About 7,803 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is I-35 HWY NB over BNSF Railway?

The structure is 234 ft (71.4 m) long with a longest span of 62 ft (18.9 m) and a deck 52 ft wide.

Who owns I-35 HWY NB over BNSF Railway?

It is owned by the State Highway Agency.