US Bridges

320 Rd. over Mud Creek

FairPosted for load

Marion County, Kansas · 0.6S 0.5E of Tampa · Structure no. 000570841505020

Built
1915
110 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
30 ft
1 main span
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

320 Rd. over Mud Creek is a concrete stringer/multi-beam or girder carrying 320 Rd. over Mud Creek in Marion County, Kansas. It was built in 1915, so it is 110 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. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, projected to reach 48 by 2044. The structure is 30 ft (9.1 m) long and 17 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries320 Rd.
CrossesMud Creek
Location0.6S 0.5E of Tampa
RouteCounty Highway 0
CountyMarion County
StateKansas
Coordinates38.53681, -97.14036
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.7 US tons
Inventory rating17.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2020)
Projected traffic48 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$240,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 320 Rd. over Mud Creek built?

It was built in 1915, making it 110 years old in 2025.

What condition is 320 Rd. over Mud 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 November 2024.

How much traffic does 320 Rd. over Mud Creek carry?

About 40 vehicles per day (2020 count).

How long is 320 Rd. over Mud Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 17 ft wide.

Who owns 320 Rd. over Mud Creek?

It is owned by the County Highway Agency.