US Bridges

I 70 (kta)nl-Sl over Cow Creek

Good

Leavenworth County, Kansas · 5.73 MI E K-32 · Structure no. 999907000520653

Built
1955
70 years old, rebuilt 2020
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
17,396
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I 70 (kta)nl-Sl over Cow Creek is a concrete culvert carrying I 70 (kta)nl-Sl over Cow Creek in Leavenworth County, Kansas. It was built in 1955 and reconstructed in 2020, so it is 70 years old, older 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 17,396 vehicles a day, roughly 19% of them trucks, projected to reach 22,973 by 2044. The structure is 43 ft (13 m) long and 289 ft wide.

Location

Open in Google Maps
CarriesI 70 (kta)nl-Sl
CrossesCow Creek
Location5.73 MI E K-32
RouteInterstate 70
CountyLeavenworth County
StateKansas
Coordinates39.04556, -95.08889
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length43 ft (13 m)
Longest span10 ft (3 m)
Deck width289 ft (88.2 m)
Roadway width91 ft (27.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,396 (2023)
Projected traffic22,973 by 2044
Trucks19%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 70 (kta)nl-Sl over Cow Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2020.

What condition is I 70 (kta)nl-Sl over Cow Creek 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 July 2024.

How much traffic does I 70 (kta)nl-Sl over Cow Creek carry?

About 17,396 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I 70 (kta)nl-Sl over Cow Creek?

The structure is 43 ft (13 m) long with a longest span of 10 ft (3 m) and a deck 289 ft wide.

Who owns I 70 (kta)nl-Sl over Cow Creek?

It is owned by the State Toll Authority.