US Bridges

US56 HWY over Mud CR UP RR Walnut ST

Fair

Marion County, Kansas · 0.83 MI E K256 · Structure no. 999905600570451

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
632 ft
6 main spans
Daily traffic
2,869
2023 count
Owner
State
State Highway Agency

About this bridge

US56 HWY over Mud CR UP RR Walnut ST is a steel continuous stringer/multi-beam or girder carrying US56 HWY over Mud CR UP RR Walnut ST in Marion County, Kansas. It was built in 1987, so it is 38 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 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 2,869 vehicles a day, roughly 69% of them trucks, projected to reach 3,299 by 2044. The structure is 632 ft (192.6 m) long and 46 ft wide.

Location

Open in Google Maps
CarriesUS56 HWY
CrossesMud CR UP RR Walnut ST
Location0.83 MI E K256
RouteU.S. Route 56
CountyMarion County
StateKansas
Coordinates38.36306, -97.02472
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckNot applicable
Main spans6
Design loadHS 20
Structure length632 ft (192.6 m)
Longest span145 ft (44.2 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,869 (2023)
Projected traffic3,299 by 2044
Trucks69%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed—
TollOn a free road
National Highway SystemNo

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 US56 HWY over Mud CR UP RR Walnut ST built?

It was built in 1987, making it 38 years old in 2025.

What condition is US56 HWY over Mud CR UP RR Walnut ST 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 US56 HWY over Mud CR UP RR Walnut ST carry?

About 2,869 vehicles per day (2023 count), of which roughly 69% are trucks.

How long is US56 HWY over Mud CR UP RR Walnut ST?

The structure is 632 ft (192.6 m) long with a longest span of 145 ft (44.2 m) and a deck 46 ft wide.

Who owns US56 HWY over Mud CR UP RR Walnut ST?

It is owned by the State Highway Agency.