US Bridges

Mound Road over Mound Bayou

Good

Sunflower County, Mississippi · Sec 21 T17N R 4W · Structure no. SA6700000000171

Built
2012
13 years old
Condition
Good
inspected October 2024
Type
Channel Beam
Concrete
Length
310 ft
10 main spans
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

Mound Road over Mound Bayou is a concrete channel beam carrying Mound Road over Mound Bayou in Sunflower County, Mississippi. It was built in 2012, so it is 13 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 50 vehicles a day, roughly 8% of them trucks, projected to reach 75 by 2044. The structure is 310 ft (94.5 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesMound Road
CrossesMound Bayou
LocationSec 21 T17N R 4W
RouteCounty Highway 115
Coordinates33.30726, -90.61895
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans10
Design loadHL 93
Structure length310 ft (94.5 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic75 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mound Road over Mound Bayou built?

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

What condition is Mound Road over Mound 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 October 2024.

How much traffic does Mound Road over Mound Bayou carry?

About 50 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Mound Road over Mound Bayou?

The structure is 310 ft (94.5 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns Mound Road over Mound Bayou?

It is owned by the County Highway Agency.