US Bridges

ST-15 Tongan. Rd. over Stranger Cr. Overflow

Good

Leavenworth County, Kansas · 4.0 MI NE of Tonganoxie · Structure no. 000000000520065

Built
2012
13 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
163 ft
3 main spans
Daily traffic
3,550
2021 count
Owner
County
County Highway Agency

About this bridge

ST-15 Tongan. Rd. over Stranger Cr. Overflow is a concrete continuous slab carrying ST-15 Tongan. Rd. over Stranger Cr. Overflow in Leavenworth County, Kansas. It was built in 2012, so it is 13 years old, younger 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 3,550 vehicles a day, roughly 11% of them trucks, projected to reach 3,750 by 2042. The structure is 163 ft (49.7 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST-15 Tongan. Rd.
CrossesStranger Cr. Overflow
Location4.0 MI NE of Tonganoxie
RouteCounty Highway 381
CountyLeavenworth County
StateKansas
Coordinates39.15759, -95.03151
Functional classRural Major Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating49.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length163 ft (49.7 m)
Longest span64 ft (19.5 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic3,550 (2021)
Projected traffic3,750 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 ST-15 Tongan. Rd. over Stranger Cr. Overflow built?

It was built in 2012, making it 13 years old in 2025.

What condition is ST-15 Tongan. Rd. over Stranger Cr. Overflow 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 August 2024.

How much traffic does ST-15 Tongan. Rd. over Stranger Cr. Overflow carry?

About 3,550 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is ST-15 Tongan. Rd. over Stranger Cr. Overflow?

The structure is 163 ft (49.7 m) long with a longest span of 64 ft (19.5 m) and a deck 34 ft wide.

Who owns ST-15 Tongan. Rd. over Stranger Cr. Overflow?

It is owned by the County Highway Agency.