US Bridges

Crd 405 over S Wyaconda Rvr

Good

Scotland County, Missouri · S 14 T 65 N R 10 W · Structure no. 36243

Built
2020
5 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
145 ft
1 main span
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

Crd 405 over S Wyaconda Rvr is a prestressed concrete tee beam carrying Crd 405 over S Wyaconda Rvr in Scotland County, Missouri. It was built in 2020, so it is 5 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 9 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 145 ft (44.2 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCrd 405
CrossesS Wyaconda Rvr
LocationS 14 T 65 N R 10 W
RouteCounty Highway 405
CountyScotland County
StateMissouri
Coordinates40.43817, -91.97004
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.4 US tons
Inventory rating56.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length145 ft (44.2 m)
Longest span142 ft (43.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic19 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Crd 405 over S Wyaconda Rvr built?

It was built in 2020, making it 5 years old in 2025.

What condition is Crd 405 over S Wyaconda Rvr 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 June 2023.

How much traffic does Crd 405 over S Wyaconda Rvr carry?

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

How long is Crd 405 over S Wyaconda Rvr?

The structure is 145 ft (44.2 m) long with a longest span of 142 ft (43.2 m) and a deck 25 ft wide.

Who owns Crd 405 over S Wyaconda Rvr?

It is owned by the County Highway Agency.