US Bridges

Rt Dd S over Castor Rvr

Fair

Madison County, Missouri · S 3 T 31 N R 8 E · Structure no. 2787

Built
1983
42 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
287 ft
5 main spans
Daily traffic
398
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Dd S over Castor Rvr is a prestressed concrete continuous stringer/multi-beam or girder carrying Rt Dd S over Castor Rvr in Madison 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 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 398 vehicles a day, roughly 11% of them trucks, projected to reach 557 by 2044. The structure is 287 ft (87.5 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRt Dd S
CrossesCastor Rvr
LocationS 3 T 31 N R 8 E
RouteState Highway 0DD
CountyMadison County
StateMissouri
Coordinates37.39877, -90.15668
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length287 ft (87.5 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic398 (2024)
Projected traffic557 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rt Dd S over Castor Rvr built?

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

What condition is Rt Dd S over Castor Rvr 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 October 2024.

How much traffic does Rt Dd S over Castor Rvr carry?

About 398 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt Dd S over Castor Rvr?

The structure is 287 ft (87.5 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns Rt Dd S over Castor Rvr?

It is owned by the State Highway Agency.