US Bridges

Dunlop Drive over NS Railroad

Good

Lee County, Alabama · Dunlop Drive · Structure no. 019634

Built
2005
20 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
4,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dunlop Drive over NS Railroad is a prestressed concrete stringer/multi-beam or girder carrying Dunlop Drive over NS Railroad in Lee County, Alabama. It was built in 2005, so it is 20 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,000 vehicles a day, projected to reach 8,000 by 2043. The structure is 180 ft (54.9 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesDunlop Drive
CrossesNS Railroad
LocationDunlop Drive
RouteCity Street 0
CountyLee County
StateAlabama
Coordinates32.64208, -85.41003
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating75.4 US tons
Inventory rating49.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span80 ft (24.4 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2023)
Projected traffic8,000 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 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$1.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Dunlop Drive over NS Railroad built?

It was built in 2005, making it 20 years old in 2025.

What condition is Dunlop Drive over NS Railroad 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 November 2023.

How much traffic does Dunlop Drive over NS Railroad carry?

About 4,000 vehicles per day (2023 count).

How long is Dunlop Drive over NS Railroad?

The structure is 180 ft (54.9 m) long with a longest span of 80 ft (24.4 m) and a deck 38 ft wide.

Who owns Dunlop Drive over NS Railroad?

It is owned by the City or Municipal Highway Agency.