US Bridges

I35 HWY NB over 15th Street

Good

Franklin County, Kansas · 2.52 MI NE US59 NB · Structure no. 999903500300271

Built
1958
67 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
123 ft
3 main spans
Daily traffic
9,129
2023 count
Owner
State
State Highway Agency

About this bridge

I35 HWY NB over 15th Street is a concrete continuous slab carrying I35 HWY NB over 15th Street in Franklin County, Kansas. It was built in 1958, so it is 67 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 9,129 vehicles a day, roughly 24% of them trucks, projected to reach 12,055 by 2044. The structure is 123 ft (37.4 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI35 HWY NB
Crosses15th Street
Location2.52 MI NE US59 NB
RouteInterstate 35
StateKansas
Coordinates38.59389, -95.23361
Functional classUrban 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 inspectionFebruary 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length123 ft (37.4 m)
Longest span48 ft (14.6 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,129 (2023)
Projected traffic12,055 by 2044
Trucks24%
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 I35 HWY NB over 15th Street built?

It was built in 1958, making it 67 years old in 2025.

What condition is I35 HWY NB over 15th Street 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 February 2024.

How much traffic does I35 HWY NB over 15th Street carry?

About 9,129 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is I35 HWY NB over 15th Street?

The structure is 123 ft (37.4 m) long with a longest span of 48 ft (14.6 m) and a deck 42 ft wide.

Who owns I35 HWY NB over 15th Street?

It is owned by the State Highway Agency.