US Bridges

12th Street over Kansas River R.R. Yards

Fair

Wyandotte County, Kansas · 12th ST over Kansas River · Structure no. 514301050000021

Built
1930
95 years old, rebuilt 2000
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,025 ft
5 main spans
Daily traffic
3,770
2015 count
Owner
County
County Highway Agency

About this bridge

12th Street over Kansas River R.R. Yards is a steel continuous stringer/multi-beam or girder carrying 12th Street over Kansas River R.R. Yards in Wyandotte County, Kansas. It was built in 1930 and reconstructed in 2000, so it is 95 years old, older 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 5 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 3,770 vehicles a day, roughly 10% of them trucks, projected to reach 5,600 by 2043. The structure is 1,025 ft (312.4 m) long and 41 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries12th Street
CrossesKansas River R.R. Yards
Location12th ST over Kansas River
RouteCity Street 0
StateKansas
Coordinates39.07349, -94.64001
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.6 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, precast panels
Main spans5 (+2 approach)
Design loadHS 25 or greater
Structure length1,025 ft (312.4 m)
Longest span209 ft (63.7 m)
Deck width41 ft (12.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic3,770 (2015)
Projected traffic5,600 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was 12th Street over Kansas River R.R. Yards built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2000.

What condition is 12th Street over Kansas River R.R. Yards 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 August 2023.

How much traffic does 12th Street over Kansas River R.R. Yards carry?

About 3,770 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is 12th Street over Kansas River R.R. Yards?

The structure is 1,025 ft (312.4 m) long with a longest span of 209 ft (63.7 m) and a deck 41 ft wide.

Who owns 12th Street over Kansas River R.R. Yards?

It is owned by the County Highway Agency.