US Bridges

County Road 321 over Hurricane CR

GoodPosted for load

Carroll County, Missouri · S 10 T 55 N R 22 W · Structure no. 16362

Built
1960
65 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
100
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 1960, so it is 65 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 110 by 2044. The structure is 50 ft (15.2 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 321
CrossesHurricane CR
LocationS 10 T 55 N R 22 W
RouteCounty Highway 118
CountyCarroll County
StateMissouri
Coordinates39.59671, -93.34762
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.8 US tons
Inventory rating13.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic110 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 County Road 321 over Hurricane CR built?

It was built in 1960, making it 65 years old in 2025.

What condition is County Road 321 over Hurricane CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does County Road 321 over Hurricane CR carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County Road 321 over Hurricane CR?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 20 ft wide.

Who owns County Road 321 over Hurricane CR?

It is owned by the County Highway Agency.