US Bridges

County RD 512 over Castor Rvr Drain D

Good

Stoddard County, Missouri · S 2 T 26 N R 11 E · Structure no. 14091

Built
1983
42 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
169 ft
5 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 512 over Castor Rvr Drain D is a prestressed concrete box beam or girders - multiple carrying County RD 512 over Castor Rvr Drain D in Stoddard County, Missouri. It was built in 1983, so it is 42 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 130 by 2043. The structure is 169 ft (51.5 m) long and 17 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesCounty RD 512
CrossesCastor Rvr Drain D
LocationS 2 T 26 N R 11 E
RouteCounty Highway 56
Coordinates36.93415, -89.82736
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2025
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating49.6 US tons
Inventory rating28.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadOther
Structure length169 ft (51.5 m)
Longest span35 ft (10.7 m)
Deck width17 ft (5.3 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic130 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 512 over Castor Rvr Drain D built?

It was built in 1983, making it 42 years old in 2025.

What condition is County RD 512 over Castor Rvr Drain D 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 2025.

How much traffic does County RD 512 over Castor Rvr Drain D carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 512 over Castor Rvr Drain D?

The structure is 169 ft (51.5 m) long with a longest span of 35 ft (10.7 m) and a deck 17 ft wide.

Who owns County RD 512 over Castor Rvr Drain D?

It is owned by the County Highway Agency.