US Bridges

County RD 334 over Splwy Drain Dtch

Good

Mississippi County, Missouri · S 21 T 25 N R 16 E · Structure no. 16351

Built
1948
77 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
122 ft
3 main spans
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 334 over Splwy Drain Dtch is a steel stringer/multi-beam or girder carrying County RD 334 over Splwy Drain Dtch in Mississippi County, Missouri. It was built in 1948, so it is 77 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.

It carries about 15 vehicles a day, roughly 10% of them trucks, projected to reach 19 by 2044. The structure is 122 ft (37.2 m) long and 14 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty RD 334
CrossesSplwy Drain Dtch
LocationS 21 T 25 N R 16 E
RouteCounty Highway 117
Coordinates36.79053, -89.33083
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.5 US tons
Inventory rating34.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length122 ft (37.2 m)
Longest span39 ft (11.9 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic19 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 RD 334 over Splwy Drain Dtch built?

It was built in 1948, making it 77 years old in 2025.

What condition is County RD 334 over Splwy 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 December 2023.

How much traffic does County RD 334 over Splwy Drain Dtch carry?

About 15 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 334 over Splwy Drain Dtch?

The structure is 122 ft (37.2 m) long with a longest span of 39 ft (11.9 m) and a deck 14 ft wide.

Who owns County RD 334 over Splwy Drain Dtch?

It is owned by the County Highway Agency.