US Bridges

Airport Road over Dye Branch

Good

DeKalb County, Alabama · 500 Ft N Al 35 T7SR8E · Structure no. 007118

Built
1960
65 years old, rebuilt 2008
Condition
Good
inspected February 2025
Type
Culvert
Concrete
Length
42 ft
4 main spans
Daily traffic
4,800
2025 count
Owner
City
City or Municipal Highway Agency

About this bridge

Airport Road over Dye Branch is a concrete culvert carrying Airport Road over Dye Branch in DeKalb County, Alabama. It was built in 1960 and reconstructed in 2008, so it is 65 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 4,800 vehicles a day, roughly 30% of them trucks, projected to reach 6,100 by 2045. The structure is 42 ft (12.8 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesAirport Road
CrossesDye Branch
Location500 Ft N Al 35 T7SR8E
RouteCity Street 105
CountyDeKalb County
StateAlabama
Coordinates34.45, -85.75
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.6 US tons
Inventory rating30.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length42 ft (12.8 m)
Longest span10 ft (3 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2025)
Projected traffic6,100 by 2045
Trucks30%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$472,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Airport Road over Dye Branch built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2008.

What condition is Airport Road over Dye 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 February 2025.

How much traffic does Airport Road over Dye Branch carry?

About 4,800 vehicles per day (2025 count), of which roughly 30% are trucks.

How long is Airport Road over Dye Branch?

The structure is 42 ft (12.8 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.

Who owns Airport Road over Dye Branch?

It is owned by the City or Municipal Highway Agency.