US Bridges

H Thompson RD over Sweetwater Branch

Good

Lamar County, Mississippi · Sec 4 T 2N R16W · Structure no. SA3700000000045

Built
1992
33 years old
Condition
Good
inspected May 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
30 ft
3 main spans
Daily traffic
80
2023 count
Owner
County
County Highway Agency

About this bridge

H Thompson RD over Sweetwater Branch is a aluminum, wrought iron, or cast iron culvert carrying H Thompson RD over Sweetwater Branch in Lamar County, Mississippi. It was built in 1992, so it is 33 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 80 vehicles a day, roughly 8% of them trucks, projected to reach 90 by 2045. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesH Thompson RD
CrossesSweetwater Branch
LocationSec 4 T 2N R16W
RouteCounty Highway 157
Coordinates31.16025, -89.60644
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.2 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span8 ft (2.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2023)
Projected traffic90 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$325,000
NavigationNo navigation control on waterway

Frequently asked questions

When was H Thompson RD over Sweetwater Branch built?

It was built in 1992, making it 33 years old in 2025.

What condition is H Thompson RD over Sweetwater Branch 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 May 2023.

How much traffic does H Thompson RD over Sweetwater Branch carry?

About 80 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is H Thompson RD over Sweetwater Branch?

The structure is 30 ft (9.1 m) long with a longest span of 8 ft (2.5 m).

Who owns H Thompson RD over Sweetwater Branch?

It is owned by the County Highway Agency.