US Bridges

Lister Dairy Road over Harpers Branch

Good

Mobile County, Alabama · 850 S I65 · Structure no. 010410

Built
1970
55 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
699
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lister Dairy Road over Harpers Branch is a concrete culvert carrying Lister Dairy Road over Harpers Branch in Mobile County, Alabama. It was built in 1970, so it is 55 years old, older than the Alabama average of 51.1 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 699 vehicles a day, roughly 1% of them trucks, projected to reach 943 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLister Dairy Road
CrossesHarpers Branch
Location850 S I65
RouteCity Street 0
CountyMobile County
StateAlabama
Coordinates30.88106, -88.03305
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 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.3 US tons
Inventory rating35.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic699 (2023)
Projected traffic943 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$744,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lister Dairy Road over Harpers Branch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Lister Dairy Road over Harpers 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 Lister Dairy Road over Harpers Branch carry?

About 699 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Lister Dairy Road over Harpers Branch?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns Lister Dairy Road over Harpers Branch?

It is owned by the City or Municipal Highway Agency.