US Bridges

CO RD SE 321 over Br of Clear CR

Fair

Johnson County, Missouri · S 28 T 45 N R 25 W · Structure no. 30184

Built
2001
24 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
30 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD SE 321 over Br of Clear CR is a concrete slab carrying CO RD SE 321 over Br of Clear CR in Johnson County, Missouri. It was built in 2001, so it is 24 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 32 by 2043. The structure is 30 ft (9.1 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCO RD SE 321
CrossesBr of Clear CR
LocationS 28 T 45 N R 25 W
RouteCounty Highway 420
CountyJohnson County
StateMissouri
Coordinates38.66996, -93.68891
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 inspectionDecember 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 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 rating93.3 US tons
Inventory rating55.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic32 by 2043
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 CO RD SE 321 over Br of Clear CR built?

It was built in 2001, making it 24 years old in 2025.

What condition is CO RD SE 321 over Br of Clear 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 December 2024.

How much traffic does CO RD SE 321 over Br of Clear CR carry?

About 20 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD SE 321 over Br of Clear CR?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 23 ft wide.

Who owns CO RD SE 321 over Br of Clear CR?

It is owned by the County Highway Agency.