US Bridges

I635 HWY NB over I35 SB BNSF Railroad

Fair

Johnson County, Kansas · JCT I35 SB/I635 NB · Structure no. 999963500462581

Built
1985
40 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
292 ft
4 main spans
Daily traffic
34,934
2023 count
Owner
State
State Highway Agency

About this bridge

I635 HWY NB over I35 SB BNSF Railroad is a steel continuous box beam or girders - multiple carrying I635 HWY NB over I35 SB BNSF Railroad in Johnson County, Kansas. It was built in 1985, so it is 40 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 34,934 vehicles a day, roughly 9% of them trucks, projected to reach 37,091 by 2044. The structure is 292 ft (89 m) long and 63 ft wide.

CarriesI635 HWY NB
CrossesI35 SB BNSF Railroad
LocationJCT I35 SB/I635 NB
RouteInterstate 635
StateKansas
Coordinates39.04139, -94.6725
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.4 US tons
Inventory rating21.1 US tons

Structure

MaterialSteel Continuous
DeckNot applicable
Main spans4
Design loadHS 20 + Mod
Structure length292 ft (89 m)
Longest span108 ft (32.9 m)
Deck width63 ft (19.1 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,934 (2023)
Projected traffic37,091 by 2044
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
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 I635 HWY NB over I35 SB BNSF Railroad built?

It was built in 1985, making it 40 years old in 2025.

What condition is I635 HWY NB over I35 SB BNSF Railroad 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 January 2025.

How much traffic does I635 HWY NB over I35 SB BNSF Railroad carry?

About 34,934 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I635 HWY NB over I35 SB BNSF Railroad?

The structure is 292 ft (89 m) long with a longest span of 108 ft (32.9 m) and a deck 63 ft wide.

Who owns I635 HWY NB over I35 SB BNSF Railroad?

It is owned by the State Highway Agency.