US Bridges

County RD 305 over Drain Dtch

Good

Dunklin County, Missouri · S 17 T 21 N R 9 E · Structure no. 31709

Built
2005
20 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 305 over Drain Dtch is a steel stringer/multi-beam or girder carrying County RD 305 over Drain Dtch in Dunklin County, Missouri. It was built in 2005, so it is 20 years old, younger 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.

It carries about 40 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2044. The structure is 51 ft (15.4 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCounty RD 305
CrossesDrain Dtch
LocationS 17 T 21 N R 9 E
RouteCounty Highway 305
Coordinates36.46763, -90.1033
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length51 ft (15.4 m)
Longest span49 ft (14.8 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic56 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 305 over Drain Dtch built?

It was built in 2005, making it 20 years old in 2025.

What condition is County RD 305 over Drain Dtch 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 RD 305 over Drain Dtch carry?

About 40 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 305 over Drain Dtch?

The structure is 51 ft (15.4 m) long with a longest span of 49 ft (14.8 m) and a deck 25 ft wide.

Who owns County RD 305 over Drain Dtch?

It is owned by the County Highway Agency.