US Bridges

SR 346 over Ditch

Good

Pontotoc County, Mississippi · 5.8 MI W SR 15 · Structure no. 310034605800380

Built
1986
39 years old
Condition
Good
inspected April 2023
Type
Channel Beam
Concrete
Length
38 ft
2 main spans
Daily traffic
2,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR 346 over Ditch is a concrete channel beam carrying SR 346 over Ditch in Pontotoc County, Mississippi. It was built in 1986, so it is 39 years old, older 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 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 2,100 vehicles a day, roughly 4% of them trucks, projected to reach 2,100 by 2043. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR 346
CrossesDitch
Location5.8 MI W SR 15
RouteState Highway 346
Coordinates34.3624, -89.12616
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.9 US tons
Inventory rating52.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2023)
Projected traffic2,100 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 346 over Ditch built?

It was built in 1986, making it 39 years old in 2025.

What condition is SR 346 over Ditch 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 April 2023.

How much traffic does SR 346 over Ditch carry?

About 2,100 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 346 over Ditch?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns SR 346 over Ditch?

It is owned by the State Highway Agency.