US Bridges

US 59 N over Tarkio Rvr

Fair

Atchison County, Missouri · S 3 T 64 N R 40 W · Structure no. 33854

Built
2012
13 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
347 ft
3 main spans
Daily traffic
1,821
2024 count
Owner
State
State Highway Agency

About this bridge

US 59 N over Tarkio Rvr is a steel continuous stringer/multi-beam or girder carrying US 59 N over Tarkio Rvr in Atchison County, Missouri. It was built in 2012, so it is 13 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 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 1,821 vehicles a day, roughly 10% of them trucks, projected to reach 2,458 by 2044. The structure is 347 ft (105.9 m) long and 30 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesUS 59 N
CrossesTarkio Rvr
LocationS 3 T 64 N R 40 W
RouteU.S. Route 59
CountyAtchison County
StateMissouri
Coordinates40.38445, -95.39712
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length347 ft (105.9 m)
Longest span140 ft (42.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,821 (2024)
Projected traffic2,458 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 59 N over Tarkio Rvr built?

It was built in 2012, making it 13 years old in 2025.

What condition is US 59 N over Tarkio Rvr 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 September 2023.

How much traffic does US 59 N over Tarkio Rvr carry?

About 1,821 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is US 59 N over Tarkio Rvr?

The structure is 347 ft (105.9 m) long with a longest span of 140 ft (42.7 m) and a deck 30 ft wide.

Who owns US 59 N over Tarkio Rvr?

It is owned by the State Highway Agency.