US Bridges

Marson Trigg RD over Beaver Creek

Good

Covington County, Mississippi · Sec 21 T 6N R15W B · Structure no. SA1600000000011

Built
1980
45 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
120
2024 count
Owner
County
County Highway Agency

About this bridge

Marson Trigg RD over Beaver Creek is a prestressed concrete stringer/multi-beam or girder carrying Marson Trigg RD over Beaver Creek in Covington County, Mississippi. It was built in 1980, so it is 45 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 120 vehicles a day, roughly 8% of them trucks, projected to reach 180 by 2044. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMarson Trigg RD
CrossesBeaver Creek
LocationSec 21 T 6N R15W B
RouteCounty Highway 915
Coordinates31.47491, -89.50433
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67 US tons
Inventory rating30.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2024)
Projected traffic180 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Marson Trigg RD over Beaver Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Marson Trigg RD over Beaver 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 November 2024.

How much traffic does Marson Trigg RD over Beaver Creek carry?

About 120 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Marson Trigg RD over Beaver Creek?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns Marson Trigg RD over Beaver Creek?

It is owned by the County Highway Agency.