US Bridges

Seth Cobb Road over Ponta Creek

FairPosted for load

Lauderdale County, Mississippi · Sec 2 T 8N R18E B · Structure no. SA3800000000296

Built
1974
51 years old
Condition
Fair
inspected December 2023
Type
Channel Beam
Concrete
Length
245 ft
11 main spans
Daily traffic
360
2022 count
Owner
County
County Highway Agency

About this bridge

Seth Cobb Road over Ponta Creek is a concrete channel beam carrying Seth Cobb Road over Ponta Creek in Lauderdale County, Mississippi. It was built in 1974, so it is 51 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. Its operating status is: posted for load restriction.

It carries about 360 vehicles a day, roughly 8% of them trucks, projected to reach 540 by 2043. The structure is 245 ft (74.7 m) long and 28 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesSeth Cobb Road
CrossesPonta Creek
LocationSec 2 T 8N R18E B
RouteCounty Highway 1042
CountyLauderdale County
StateMississippi
Coordinates32.57294, -88.43149
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.9 US tons
Inventory rating20.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans11
Design loadH 15
Structure length245 ft (74.7 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2022)
Projected traffic540 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.6 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Seth Cobb Road over Ponta Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Seth Cobb Road over Ponta Creek 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 December 2023.

How much traffic does Seth Cobb Road over Ponta Creek carry?

About 360 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Seth Cobb Road over Ponta Creek?

The structure is 245 ft (74.7 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns Seth Cobb Road over Ponta Creek?

It is owned by the County Highway Agency.