US Bridges

SW 12th over Martin Cr.

Fair

Shawnee County, Kansas · 48M E. of 12th & Cambridg · Structure no. 427950895340F5D

Built
1977
48 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
5,145
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW 12th over Martin Cr. is a concrete culvert carrying SW 12th over Martin Cr. in Shawnee County, Kansas. It was built in 1977, so it is 48 years old, younger 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 6 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 5,145 vehicles a day, roughly 1% of them trucks, projected to reach 7,440 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSW 12th
CrossesMartin Cr.
Location48M E. of 12th & Cambridg
RouteCity Street 5340
CountyShawnee County
StateKansas
Coordinates39.04581, -95.72242
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.9 US tons
Inventory rating24.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic5,145 (2017)
Projected traffic7,440 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 SW 12th over Martin Cr. built?

It was built in 1977, making it 48 years old in 2025.

What condition is SW 12th over Martin Cr. 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 October 2023.

How much traffic does SW 12th over Martin Cr. carry?

About 5,145 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is SW 12th over Martin Cr.?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.6 m).

Who owns SW 12th over Martin Cr.?

It is owned by the City or Municipal Highway Agency.