US Bridges

Thornton Road over Small Creek

Good

Amite County, Mississippi · Sec 11 T 4N R 4E · Structure no. SA030000000A158

Built
2016
9 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
60
2021 count
Owner
County
County Highway Agency

About this bridge

Thornton Road over Small Creek is a concrete culvert carrying Thornton Road over Small Creek in Amite County, Mississippi. It was built in 2016, so it is 9 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 60 vehicles a day, roughly 8% of them trucks, projected to reach 90 by 2043. The structure is 34 ft (10.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesThornton Road
CrossesSmall Creek
LocationSec 11 T 4N R 4E
RouteCounty Highway 158
Coordinates31.32261, -90.7783
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
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 rating47.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length34 ft (10.5 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 traffic60 (2021)
Projected traffic90 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Thornton Road over Small Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Thornton Road over Small 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 February 2023.

How much traffic does Thornton Road over Small Creek carry?

About 60 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Thornton Road over Small Creek?

The structure is 34 ft (10.5 m) long with a longest span of 16 ft (4.9 m).

Who owns Thornton Road over Small Creek?

It is owned by the County Highway Agency.