US Bridges

US 278/SR 6 over Bobo Bayou

Good

Quitman County, Mississippi · 6.0 MI E SR 3 · Structure no. 210027806003790

Built
2017
8 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
312 ft
1 main span
Daily traffic
5,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 278/SR 6 over Bobo Bayou is a prestressed concrete stringer/multi-beam or girder carrying US 278/SR 6 over Bobo Bayou in Quitman County, Mississippi. It was built in 2017, so it is 8 years old, younger than the Mississippi average of 38.9 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 5,300 vehicles a day, roughly 9% of them trucks, projected to reach 5,400 by 2043. The structure is 312 ft (95 m) long and 47 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesUS 278/SR 6
CrossesBobo Bayou
Location6.0 MI E SR 3
RouteU.S. Route 278
Coordinates34.28397, -90.17622
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal 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 rating55.6 US tons
Inventory rating41.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHL 93
Structure length312 ft (95 m)
Longest span110 ft (33.5 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,300 (2023)
Projected traffic5,400 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemYes

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 US 278/SR 6 over Bobo Bayou built?

It was built in 2017, making it 8 years old in 2025.

What condition is US 278/SR 6 over Bobo Bayou 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 August 2023.

How much traffic does US 278/SR 6 over Bobo Bayou carry?

About 5,300 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US 278/SR 6 over Bobo Bayou?

The structure is 312 ft (95 m) long with a longest span of 110 ft (33.5 m) and a deck 47 ft wide.

Who owns US 278/SR 6 over Bobo Bayou?

It is owned by the State Highway Agency.