US Bridges

300 ST over Minnesota Valley C

Fair

Atchison County, Missouri · S 4 T 63 N R 38 W · Structure no. 28967

Built
2001
24 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
112 ft
3 main spans
Daily traffic
10
2024 count
Owner
County
County Highway Agency

About this bridge

300 ST over Minnesota Valley C is a steel stringer/multi-beam or girder carrying 300 ST over Minnesota Valley C in Atchison County, Missouri. It was built in 2001, so it is 24 years old, younger than the Missouri average of 45.1 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 12 by 2044. The structure is 112 ft (34 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries300 ST
CrossesMinnesota Valley C
LocationS 4 T 63 N R 38 W
RouteCounty Highway 512
CountyAtchison County
StateMissouri
Coordinates40.29112, -95.19824
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
Deck8 Very GoodNo problems noted.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length112 ft (34 m)
Longest span50 ft (15.3 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2024)
Projected traffic12 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 300 ST over Minnesota Valley C built?

It was built in 2001, making it 24 years old in 2025.

What condition is 300 ST over Minnesota Valley C 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 February 2024.

How much traffic does 300 ST over Minnesota Valley C carry?

About 10 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 300 ST over Minnesota Valley C?

The structure is 112 ft (34 m) long with a longest span of 50 ft (15.3 m) and a deck 25 ft wide.

Who owns 300 ST over Minnesota Valley C?

It is owned by the County Highway Agency.