US Bridges

SR 16/SR 149 over Ash Bayou

Fair

Yazoo County, Mississippi · 1.7 MI E Humphreys Cl · Structure no. 210004948221080

Built
1966
59 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
158 ft
3 main spans
Daily traffic
1,900
2023 count
Owner
State
State Highway Agency

About this bridge

SR 16/SR 149 over Ash Bayou is a prestressed concrete stringer/multi-beam or girder carrying SR 16/SR 149 over Ash Bayou in Yazoo County, Mississippi. It was built in 1966, so it is 59 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,900 vehicles a day, roughly 12% of them trucks, projected to reach 1,900 by 2043. The structure is 158 ft (48.2 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSR 16/SR 149
CrossesAsh Bayou
Location1.7 MI E Humphreys Cl
RouteState Highway 16
CountyYazoo County
StateMississippi
Coordinates32.90513, -90.54817
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating58.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length158 ft (48.2 m)
Longest span51 ft (15.5 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic1,900 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$388 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 16/SR 149 over Ash Bayou built?

It was built in 1966, making it 59 years old in 2025.

What condition is SR 16/SR 149 over Ash Bayou in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does SR 16/SR 149 over Ash Bayou carry?

About 1,900 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is SR 16/SR 149 over Ash Bayou?

The structure is 158 ft (48.2 m) long with a longest span of 51 ft (15.5 m) and a deck 33 ft wide.

Who owns SR 16/SR 149 over Ash Bayou?

It is owned by the State Highway Agency.