US Bridges

County RD 321 over Drain Dtch

Fair

Mississippi County, Missouri · S 19 T 26 N R 17 E · Structure no. 29194

Built
2001
24 years old
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Single or Spread
Steel
Length
90 ft
1 main span
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 321 over Drain Dtch is a steel box beam or girders - single or spread carrying County RD 321 over Drain Dtch in Mississippi 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 6 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 15 vehicles a day, roughly 15% of them trucks, projected to reach 19 by 2044. The structure is 90 ft (27.3 m) long and 19 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty RD 321
CrossesDrain Dtch
LocationS 19 T 26 N R 17 E
RouteCounty Highway 321
CountyMississippi County
StateMissouri
Coordinates36.8875, -89.2525
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length90 ft (27.3 m)
Longest span75 ft (22.9 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic19 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 RD 321 over Drain Dtch built?

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

What condition is County RD 321 over Drain Dtch 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 2023.

How much traffic does County RD 321 over Drain Dtch carry?

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

How long is County RD 321 over Drain Dtch?

The structure is 90 ft (27.3 m) long with a longest span of 75 ft (22.9 m) and a deck 19 ft wide.

Who owns County RD 321 over Drain Dtch?

It is owned by the County Highway Agency.