US Bridges

Airport Blvd over Big Creek

Fair

Mobile County, Alabama · 1 MI E Miss Line · Structure no. 013334

Built
1984
41 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
395 ft
11 main spans
Daily traffic
5,238
2024 count
Owner
County
County Highway Agency

About this bridge

Airport Blvd over Big Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Airport Blvd over Big Creek in Mobile County, Alabama. It was built in 1984, so it is 41 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 5,238 vehicles a day, roughly 4% of them trucks, projected to reach 7,783 by 2044. The structure is 395 ft (120.4 m) long and 32 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesAirport Blvd
CrossesBig Creek
Location1 MI E Miss Line
RouteCounty Highway 56
CountyMobile County
StateAlabama
Coordinates30.63997, -88.39304
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length395 ft (120.4 m)
Longest span55 ft (16.8 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,238 (2024)
Projected traffic7,783 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$3.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Airport Blvd over Big Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Airport Blvd over Big Creek 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 June 2024.

How much traffic does Airport Blvd over Big Creek carry?

About 5,238 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Airport Blvd over Big Creek?

The structure is 395 ft (120.4 m) long with a longest span of 55 ft (16.8 m) and a deck 32 ft wide.

Who owns Airport Blvd over Big Creek?

It is owned by the County Highway Agency.