US Bridges

Al - 75 over Calvert Prong(champion)

Fair

Blount County, Alabama · .8 Mi. No CO RD 39 · Structure no. 017893

Built
2013
12 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
660 ft
6 main spans
Daily traffic
7,530
2025 count
Owner
State
State Highway Agency

About this bridge

Al - 75 over Calvert Prong(champion) is a prestressed concrete stringer/multi-beam or girder carrying Al - 75 over Calvert Prong(champion) in Blount County, Alabama. It was built in 2013, so it is 12 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 7,530 vehicles a day, roughly 9% of them trucks, projected to reach 9,692 by 2045. The structure is 660 ft (201.2 m) long and 47 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesAl - 75
CrossesCalvert Prong(champion)
Location.8 Mi. No CO RD 39
RouteState Highway 75
CountyBlount County
StateAlabama
Coordinates33.98571, -86.4422
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating95.7 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length660 ft (201.2 m)
Longest span135 ft (41.1 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,530 (2025)
Projected traffic9,692 by 2045
Trucks9%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Al - 75 over Calvert Prong(champion) built?

It was built in 2013, making it 12 years old in 2025.

What condition is Al - 75 over Calvert Prong(champion) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.

How much traffic does Al - 75 over Calvert Prong(champion) carry?

About 7,530 vehicles per day (2025 count), of which roughly 9% are trucks.

How long is Al - 75 over Calvert Prong(champion)?

The structure is 660 ft (201.2 m) long with a longest span of 135 ft (41.1 m) and a deck 47 ft wide.

Who owns Al - 75 over Calvert Prong(champion)?

It is owned by the State Highway Agency.