US Bridges

County RD 484 over Drain Dtch

Poor

Pemiscot County, Missouri · S 2 T 16 N R 10 E · Structure no. 21772

Built
1990
35 years old
Condition
Poor
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
227 ft
5 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 484 over Drain Dtch is a prestressed concrete box beam or girders - multiple carrying County RD 484 over Drain Dtch in Pemiscot County, Missouri. It was built in 1990, so it is 35 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 40 vehicles a day, roughly 10% of them trucks, projected to reach 52 by 2043. The structure is 227 ft (69.2 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty RD 484
CrossesDrain Dtch
LocationS 2 T 16 N R 10 E
RouteCounty Highway 323
CountyPemiscot County
StateMissouri
Coordinates36.05979, -89.95027
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.6 US tons
Inventory rating23.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadOther
Structure length227 ft (69.2 m)
Longest span46 ft (14 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic52 by 2043
Trucks10%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$989,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 484 over Drain Dtch built?

It was built in 1990, making it 35 years old in 2025.

What condition is County RD 484 over Drain Dtch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does County RD 484 over Drain Dtch carry?

About 40 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 484 over Drain Dtch?

The structure is 227 ft (69.2 m) long with a longest span of 46 ft (14 m) and a deck 21 ft wide.

Who owns County RD 484 over Drain Dtch?

It is owned by the County Highway Agency.