US Bridges

330 ST over Trib of Elkhorn CR

FairPosted for load

Nodaway County, Missouri · S 30 T 63 N R 36 W · Structure no. 14934

Built
1987
38 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
3 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

330 ST over Trib of Elkhorn CR is a steel stringer/multi-beam or girder carrying 330 ST over Trib of Elkhorn CR in Nodaway County, Missouri. It was built in 1987, so it is 38 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. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 72 ft (21.9 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries330 ST
CrossesTrib of Elkhorn CR
LocationS 30 T 63 N R 36 W
RouteCounty Highway 796
CountyNodaway County
StateMissouri
Coordinates40.2428, -94.99851
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length72 ft (21.9 m)
Longest span65 ft (19.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 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 330 ST over Trib of Elkhorn CR built?

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

What condition is 330 ST over Trib of Elkhorn 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 January 2025.

How much traffic does 330 ST over Trib of Elkhorn CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 330 ST over Trib of Elkhorn CR?

The structure is 72 ft (21.9 m) long with a longest span of 65 ft (19.8 m) and a deck 20 ft wide.

Who owns 330 ST over Trib of Elkhorn CR?

It is owned by the County Highway Agency.