US Bridges

Mt. Vernon 51 over Trib of Big Black Canal

Good

Webster County, Mississippi · Sec 1 T19N R 9E · Structure no. SA7800000000024

Built
1998
27 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
200
2015 count
Owner
County
County Highway Agency

About this bridge

Mt. Vernon 51 over Trib of Big Black Canal is a concrete culvert carrying Mt. Vernon 51 over Trib of Big Black Canal in Webster County, Mississippi. It was built in 1998, so it is 27 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 200 vehicles a day, roughly 8% of them trucks, projected to reach 300 by 2035. The structure is 30 ft (9.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMt. Vernon 51
CrossesTrib of Big Black Canal
LocationSec 1 T19N R 9E
RouteCounty Highway 51
Coordinates33.54253, -89.29725
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2015)
Projected traffic300 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Mt. Vernon 51 over Trib of Big Black Canal built?

It was built in 1998, making it 27 years old in 2025.

What condition is Mt. Vernon 51 over Trib of Big Black Canal 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 Mt. Vernon 51 over Trib of Big Black Canal carry?

About 200 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Mt. Vernon 51 over Trib of Big Black Canal?

The structure is 30 ft (9.2 m) long with a longest span of 14 ft (4.3 m).

Who owns Mt. Vernon 51 over Trib of Big Black Canal?

It is owned by the County Highway Agency.