US Bridges

County Road 321 over Hurricane CR

FairPosted for load

Carroll County, Missouri · S 34 T 55 N R 22 W · Structure no. 16397

Built
1930
95 years old, rebuilt 1985
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
3 main spans
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

County Road 321 over Hurricane CR is a steel stringer/multi-beam or girder carrying County Road 321 over Hurricane CR in Carroll County, Missouri. It was built in 1930 and reconstructed in 1985, so it is 95 years old, older 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 15 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2044. The structure is 63 ft (19.2 m) long and 18 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCounty Road 321
CrossesHurricane CR
LocationS 34 T 55 N R 22 W
RouteCounty Highway 118
CountyCarroll County
StateMissouri
Coordinates39.53658, -93.34714
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.8 US tons
Inventory rating15.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length63 ft (19.2 m)
Longest span31 ft (9.4 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic17 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 County Road 321 over Hurricane CR built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1985.

What condition is County Road 321 over Hurricane 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 County Road 321 over Hurricane CR carry?

About 15 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County Road 321 over Hurricane CR?

The structure is 63 ft (19.2 m) long with a longest span of 31 ft (9.4 m) and a deck 18 ft wide.

Who owns County Road 321 over Hurricane CR?

It is owned by the County Highway Agency.