US Bridges

Greenbrier Parkway over Unnamed Ditch

Good

Limestone County, Alabama · 2 MI N of Old HWY 20 · Structure no. 021645

Built
2020
5 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
6,000
2025 count
Owner
City
City or Municipal Highway Agency

About this bridge

Greenbrier Parkway over Unnamed Ditch is a concrete culvert carrying Greenbrier Parkway over Unnamed Ditch in Limestone County, Alabama. It was built in 2020, so it is 5 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 6,000 vehicles a day, roughly 2% of them trucks, projected to reach 8,400 by 2045. The structure is 26 ft (7.8 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesGreenbrier Parkway
CrossesUnnamed Ditch
Location2 MI N of Old HWY 20
RouteCity Street 0
CountyLimestone County
StateAlabama
Coordinates34.705, -86.86233
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating93.7 US tons
Inventory rating56.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2025)
Projected traffic8,400 by 2045
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed9.9 mi (16 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$2.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Greenbrier Parkway over Unnamed Ditch built?

It was built in 2020, making it 5 years old in 2025.

What condition is Greenbrier Parkway over Unnamed Ditch 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 January 2025.

How much traffic does Greenbrier Parkway over Unnamed Ditch carry?

About 6,000 vehicles per day (2025 count), of which roughly 2% are trucks.

How long is Greenbrier Parkway over Unnamed Ditch?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.7 m).

Who owns Greenbrier Parkway over Unnamed Ditch?

It is owned by the City or Municipal Highway Agency.