US Bridges

Southlake Parkway over Southlake

Good

Shelby County, Alabama · .5 KM NW JCT CO RD 17 · Structure no. 017656

Built
1986
39 years old
Condition
Good
inspected August 2024
Type
Culvert
Steel
Length
93 ft
9 main spans
Daily traffic
500
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Southlake Parkway over Southlake is a steel culvert carrying Southlake Parkway over Southlake in Shelby County, Alabama. It was built in 1986, so it is 39 years old, younger 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 500 vehicles a day, roughly 1% of them trucks, projected to reach 700 by 2044. The structure is 93 ft (28.3 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSouthlake Parkway
CrossesSouthlake
Location.5 KM NW JCT CO RD 17
RouteCity Street 17
StateAlabama
Coordinates33.37694, -86.77528
Functional classUrban 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating98 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans9
Design loadH 15
Structure length93 ft (28.3 m)
Longest span8 ft (2.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2024)
Projected traffic700 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Southlake Parkway over Southlake built?

It was built in 1986, making it 39 years old in 2025.

What condition is Southlake Parkway over Southlake 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 August 2024.

How much traffic does Southlake Parkway over Southlake carry?

About 500 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Southlake Parkway over Southlake?

The structure is 93 ft (28.3 m) long with a longest span of 8 ft (2.4 m) and a deck 26 ft wide.

Who owns Southlake Parkway over Southlake?

It is owned by the City or Municipal Highway Agency.