US Bridges

County RD 526 over Splwy Drain Dtch

Fair

Mississippi County, Missouri · S 18 T 24 N R 16 E · Structure no. 15780

Built
1960
65 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
142 ft
3 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 526 over Splwy Drain Dtch is a steel stringer/multi-beam or girder carrying County RD 526 over Splwy Drain Dtch in Mississippi County, Missouri. It was built in 1960, so it is 65 years old, older 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2044. The structure is 142 ft (43.3 m) long and 14 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCounty RD 526
CrossesSplwy Drain Dtch
LocationS 18 T 24 N R 16 E
RouteCounty Highway 99
CountyMississippi County
StateMissouri
Coordinates36.72301, -89.36389
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating50.6 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length142 ft (43.3 m)
Longest span49 ft (14.9 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic44 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 526 over Splwy Drain Dtch built?

It was built in 1960, making it 65 years old in 2025.

What condition is County RD 526 over Splwy 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 526 over Splwy Drain Dtch carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 526 over Splwy Drain Dtch?

The structure is 142 ft (43.3 m) long with a longest span of 49 ft (14.9 m) and a deck 14 ft wide.

Who owns County RD 526 over Splwy Drain Dtch?

It is owned by the County Highway Agency.