US Bridges

Y Ave over Lit Tarkio CR

Fair

Atchison County, Missouri · S 12 T 65 N R 38 W · Structure no. 21698

Built
1990
35 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
10
2024 count
Owner
County
County Highway Agency

About this bridge

Y Ave over Lit Tarkio CR is a steel stringer/multi-beam or girder carrying Y Ave over Lit Tarkio CR in Atchison County, Missouri. It was built in 1990, so it is 35 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 29 ft (8.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesY Ave
CrossesLit Tarkio CR
LocationS 12 T 65 N R 38 W
RouteCounty Highway 320
CountyAtchison County
StateMissouri
Coordinates40.46548, -95.215
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 adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating58.5 US tons
Inventory rating33.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length29 ft (8.8 m)
Longest span28 ft (8.4 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.7 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 closed1.9 mi (3 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 Y Ave over Lit Tarkio CR built?

It was built in 1990, making it 35 years old in 2025.

What condition is Y Ave over Lit Tarkio CR 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 Y Ave over Lit Tarkio CR carry?

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

How long is Y Ave over Lit Tarkio CR?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.4 m) and a deck 28 ft wide.

Who owns Y Ave over Lit Tarkio CR?

It is owned by the County Highway Agency.