US Bridges

Rocky Branch Road over Hartford Mill Creek

Good

Lamar County, Mississippi · Sec 18 T 4N R16W B · Structure no. SA3700000000105

Built
1975
50 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
43 ft
2 main spans
Daily traffic
540
2024 count
Owner
County
County Highway Agency

About this bridge

Rocky Branch Road over Hartford Mill Creek is a concrete culvert carrying Rocky Branch Road over Hartford Mill Creek in Lamar County, Mississippi. It was built in 1975, so it is 50 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 540 vehicles a day, roughly 8% of them trucks, projected to reach 610 by 2046. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRocky Branch Road
CrossesHartford Mill Creek
LocationSec 18 T 4N R16W B
RouteCounty Highway 278
Coordinates31.31026, -89.63735
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.1 US tons
Inventory rating40.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length43 ft (13.1 m)
Longest span13 ft (4.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2024)
Projected traffic610 by 2046
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 Rocky Branch Road over Hartford Mill Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Rocky Branch Road over Hartford Mill 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 December 2023.

How much traffic does Rocky Branch Road over Hartford Mill Creek carry?

About 540 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Rocky Branch Road over Hartford Mill Creek?

The structure is 43 ft (13.1 m) long with a longest span of 13 ft (4.1 m).

Who owns Rocky Branch Road over Hartford Mill Creek?

It is owned by the County Highway Agency.