US Bridges

SR 12 over Yazoo River

Fair

Humphreys County, Mississippi · 0.2 MI E US 49W · Structure no. 310001202703550

Built
1982
43 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
3,272 ft
9 main spans
Daily traffic
1,800
2023 count
Owner
State
State Highway Agency

About this bridge

SR 12 over Yazoo River is a steel continuous stringer/multi-beam or girder carrying SR 12 over Yazoo River in Humphreys County, Mississippi. It was built in 1982, so it is 43 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 6 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 1,800 vehicles a day, roughly 14% of them trucks, projected to reach 1,800 by 2043. The structure is 3,272 ft (997.3 m) long and 41 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesSR 12
CrossesYazoo River
Location0.2 MI E US 49W
RouteState Highway 12
CountyHumphreys County
StateMississippi
Coordinates33.17273, -90.49536
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.3 US tons
Inventory rating27.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9 (+27 approach)
Design loadHS 20
Structure length3,272 ft (997.3 m)
Longest span300 ft (91.4 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2023)
Projected traffic1,800 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 12 over Yazoo River built?

It was built in 1982, making it 43 years old in 2025.

What condition is SR 12 over Yazoo River 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 February 2023.

How much traffic does SR 12 over Yazoo River carry?

About 1,800 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 12 over Yazoo River?

The structure is 3,272 ft (997.3 m) long with a longest span of 300 ft (91.4 m) and a deck 41 ft wide.

Who owns SR 12 over Yazoo River?

It is owned by the State Highway Agency.