US Bridges

Plattsburg Mt Cal over Alampa Creek

Good

Winston County, Mississippi · Sec 19 T13N R11E B · Structure no. SA8000000000126

Built
2011
14 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
400
2022 count
Owner
County
County Highway Agency

About this bridge

Plattsburg Mt Cal over Alampa Creek is a concrete culvert carrying Plattsburg Mt Cal over Alampa Creek in Winston County, Mississippi. It was built in 2011, so it is 14 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 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 400 vehicles a day, roughly 8% of them trucks, projected to reach 600 by 2042. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesPlattsburg Mt Cal
CrossesAlampa Creek
LocationSec 19 T13N R11E B
RouteCounty Highway 561
Coordinates32.97065, -89.20502
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.4 US tons
Inventory rating40.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic600 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Plattsburg Mt Cal over Alampa Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Plattsburg Mt Cal over Alampa Creek 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 March 2024.

How much traffic does Plattsburg Mt Cal over Alampa Creek carry?

About 400 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Plattsburg Mt Cal over Alampa Creek?

The structure is 34 ft (10.4 m) long with a longest span of 16 ft (4.9 m).

Who owns Plattsburg Mt Cal over Alampa Creek?

It is owned by the County Highway Agency.