US Bridges

I-135 HWY SB over 12th ST

Good

Harvey County, Kansas · 0.21 Mi. S of US-50 N JCT · Structure no. 999913500400211

Built
1959
66 years old, rebuilt 2019
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
12,418
2023 count
Owner
State
State Highway Agency

About this bridge

I-135 HWY SB over 12th ST is a concrete continuous slab carrying I-135 HWY SB over 12th ST in Harvey County, Kansas. It was built in 1959 and reconstructed in 2019, so it is 66 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 12,418 vehicles a day, roughly 18% of them trucks, projected to reach 15,152 by 2044. The structure is 102 ft (31.2 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-135 HWY SB
Crosses12th ST
Location0.21 Mi. S of US-50 N JCT
RouteInterstate 135
CountyHarvey County
StateKansas
Coordinates38.05722, -97.3225
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length102 ft (31.2 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,418 (2023)
Projected traffic15,152 by 2044
Trucks18%
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 I-135 HWY SB over 12th ST built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2019.

What condition is I-135 HWY SB over 12th ST 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 October 2024.

How much traffic does I-135 HWY SB over 12th ST carry?

About 12,418 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I-135 HWY SB over 12th ST?

The structure is 102 ft (31.2 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns I-135 HWY SB over 12th ST?

It is owned by the State Highway Agency.