US Bridges

Street Road over Mill Branch

Good

Amite County, Mississippi · Sec 20 T 1N R 3E B · Structure no. SA0300000000012

Built
1962
63 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
43 ft
2 main spans
Daily traffic
200
2021 count
Owner
County
County Highway Agency

About this bridge

Street Road over Mill Branch is a concrete culvert carrying Street Road over Mill Branch in Amite County, Mississippi. It was built in 1962, so it is 63 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 200 vehicles a day, roughly 8% of them trucks, projected to reach 300 by 2043. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesStreet Road
CrossesMill Branch
LocationSec 20 T 1N R 3E B
RouteCounty Highway 69
Coordinates31.05283, -90.86819
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 inspectionMarch 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 rating67.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length43 ft (13.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2021)
Projected traffic300 by 2043
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 Street Road over Mill Branch built?

It was built in 1962, making it 63 years old in 2025.

What condition is Street Road over Mill 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 March 2023.

How much traffic does Street Road over Mill Branch carry?

About 200 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Street Road over Mill Branch?

The structure is 43 ft (13.1 m) long with a longest span of 20 ft (6.1 m).

Who owns Street Road over Mill Branch?

It is owned by the County Highway Agency.