US Bridges

Thompson Road over Small Branch

Good

Amite County, Mississippi · Sec 36 T 4N R 5E B · Structure no. SA0300000000184

Built
1973
52 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
35 ft
2 main spans
Daily traffic
640
2022 count
Owner
County
County Highway Agency

About this bridge

Thompson Road over Small Branch is a concrete culvert carrying Thompson Road over Small Branch in Amite County, Mississippi. It was built in 1973, so it is 52 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 640 vehicles a day, roughly 8% of them trucks, projected to reach 960 by 2044. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesThompson Road
CrossesSmall Branch
LocationSec 36 T 4N R 5E B
RouteCounty Highway 267
Coordinates31.2638, -90.6617
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.7 US tons
Inventory rating30 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length35 ft (10.7 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 traffic640 (2022)
Projected traffic960 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Thompson Road over Small Branch built?

It was built in 1973, making it 52 years old in 2025.

What condition is Thompson Road over Small 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 January 2024.

How much traffic does Thompson Road over Small Branch carry?

About 640 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Thompson Road over Small Branch?

The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.9 m).

Who owns Thompson Road over Small Branch?

It is owned by the County Highway Agency.