US Bridges

Rt Bb N over Garnett Br

Good

Shelby County, Missouri · S 11 T 59 N R 11 W · Structure no. 33935

Built
2012
13 years old
Condition
Good
inspected September 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
95 ft
2 main spans
Daily traffic
32
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Bb N over Garnett Br is a prestressed concrete box beam or girders - multiple carrying Rt Bb N over Garnett Br in Shelby County, Missouri. It was built in 2012, so it is 13 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 32 vehicles a day, roughly 19% of them trucks, projected to reach 46 by 2044. The structure is 95 ft (29 m) long and 26 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesRt Bb N
CrossesGarnett Br
LocationS 11 T 59 N R 11 W
RouteState Highway 0BB
Coordinates39.93431, -92.09276
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating43.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length95 ft (29 m)
Longest span60 ft (18.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2024)
Projected traffic46 by 2044
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rt Bb N over Garnett Br built?

It was built in 2012, making it 13 years old in 2025.

What condition is Rt Bb N over Garnett Br 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 September 2021.

How much traffic does Rt Bb N over Garnett Br carry?

About 32 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is Rt Bb N over Garnett Br?

The structure is 95 ft (29 m) long with a longest span of 60 ft (18.3 m) and a deck 26 ft wide.

Who owns Rt Bb N over Garnett Br?

It is owned by the State Highway Agency.