US Bridges

I70 WB to I635 SB over I-635 NB & I-70 Highways

Fair

Wyandotte County, Kansas · I-70 / I-635 Interchange · Structure no. 999963501051521

Built
1974
51 years old, rebuilt 2022
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,486 ft
14 main spans
Daily traffic
9,715
2023 count
Owner
State
State Highway Agency

About this bridge

I70 WB to I635 SB over I-635 NB & I-70 Highways is a steel continuous stringer/multi-beam or girder carrying I70 WB to I635 SB over I-635 NB & I-70 Highways in Wyandotte County, Kansas. It was built in 1974 and reconstructed in 2022, so it is 51 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 9,715 vehicles a day. The structure is 1,486 ft (452.8 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI70 WB to I635 SB
CrossesI-635 NB & I-70 Highways
LocationI-70 / I-635 Interchange
RouteState Highway 21
CountyWyandotte County
StateKansas
Coordinates39.10417, -94.67778
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating70.5 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckNot applicable
Main spans14
Design loadHS 20 + Mod
Structure length1,486 ft (452.8 m)
Longest span167 ft (50.9 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,715 (2023)
Projected traffic—
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 I70 WB to I635 SB over I-635 NB & I-70 Highways built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2022.

What condition is I70 WB to I635 SB over I-635 NB & I-70 Highways 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 2023.

How much traffic does I70 WB to I635 SB over I-635 NB & I-70 Highways carry?

About 9,715 vehicles per day (2023 count).

How long is I70 WB to I635 SB over I-635 NB & I-70 Highways?

The structure is 1,486 ft (452.8 m) long with a longest span of 167 ft (50.9 m) and a deck 32 ft wide.

Who owns I70 WB to I635 SB over I-635 NB & I-70 Highways?

It is owned by the State Highway Agency.