US Bridges

CR 85 over W Prongs Son CR

Good

Dade County, Missouri · S 5 T 31 N R 27 W · Structure no. 36717

Built
2022
3 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

CR 85 over W Prongs Son CR is a prestressed concrete tee beam carrying CR 85 over W Prongs Son CR in Dade County, Missouri. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, roughly 10% of them trucks, projected to reach 46 by 2044. The structure is 77 ft (23.5 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 85
CrossesW Prongs Son CR
LocationS 5 T 31 N R 27 W
RouteCounty Highway 223
CountyDade County
StateMissouri
Coordinates37.45731, -93.92556
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating52.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span75 ft (22.9 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic46 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 85 over W Prongs Son CR built?

It was built in 2022, making it 3 years old in 2025.

What condition is CR 85 over W Prongs Son CR 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 2024.

How much traffic does CR 85 over W Prongs Son CR carry?

About 40 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is CR 85 over W Prongs Son CR?

The structure is 77 ft (23.5 m) long with a longest span of 75 ft (22.9 m) and a deck 25 ft wide.

Who owns CR 85 over W Prongs Son CR?

It is owned by the County Highway Agency.