US Bridges

US 56 Highway over Martin Creek

Fair

Johnson County, Kansas · 0.92 MI E Douglas CO Line · Structure no. 999905600460801

Built
1932
93 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
4,400
2023 count
Owner
State
State Highway Agency

About this bridge

US 56 Highway over Martin Creek is a concrete culvert carrying US 56 Highway over Martin Creek in Johnson County, Kansas. It was built in 1932, so it is 93 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 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 4,400 vehicles a day, roughly 6% of them trucks, projected to reach 6,044 by 2044. The structure is 21 ft (6.3 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 56 Highway
CrossesMartin Creek
Location0.92 MI E Douglas CO Line
RouteU.S. Route 56
CountyJohnson County
StateKansas
Coordinates38.7675, -95.03917
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
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
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating32.8 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2023)
Projected traffic6,044 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 US 56 Highway over Martin Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is US 56 Highway over Martin Creek 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 July 2024.

How much traffic does US 56 Highway over Martin Creek carry?

About 4,400 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 56 Highway over Martin Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns US 56 Highway over Martin Creek?

It is owned by the State Highway Agency.