US Bridges

Old Bb Road over Mothershead CR

Good

Clay County, Missouri · S 6 T 53 N R 30 W · Structure no. 37126

Built
2023
2 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
1 main span
Daily traffic
1,102
2024 count
Owner
County
County Highway Agency

About this bridge

Old Bb Road over Mothershead CR is a steel stringer/multi-beam or girder carrying Old Bb Road over Mothershead CR in Clay County, Missouri. It was built in 2023, so it is 2 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 1,102 vehicles a day, roughly 10% of them trucks, projected to reach 1,708 by 2044. The structure is 71 ft (21.7 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld Bb Road
CrossesMothershead CR
LocationS 6 T 53 N R 30 W
RouteCounty Highway 64
CountyClay County
StateMissouri
Coordinates39.43083, -94.31325
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 protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.3 US tons
Inventory rating50.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length71 ft (21.7 m)
Longest span69 ft (21.1 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,102 (2024)
Projected traffic1,708 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Old Bb Road over Mothershead CR built?

It was built in 2023, making it 2 years old in 2025.

What condition is Old Bb Road over Mothershead 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 December 2023.

How much traffic does Old Bb Road over Mothershead CR carry?

About 1,102 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Old Bb Road over Mothershead CR?

The structure is 71 ft (21.7 m) long with a longest span of 69 ft (21.1 m) and a deck 27 ft wide.

Who owns Old Bb Road over Mothershead CR?

It is owned by the County Highway Agency.