US Bridges

Frtg RD to I165 NB over Bay Bridge RD

Fair

Mobile County, Alabama · I165 @ Bay Bridge RD · Structure no. 015578

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
325 ft
5 main spans
Daily traffic
9,367
2023 count
Owner
State
State Highway Agency

About this bridge

Frtg RD to I165 NB over Bay Bridge RD is a prestressed concrete continuous stringer/multi-beam or girder carrying Frtg RD to I165 NB over Bay Bridge RD in Mobile County, Alabama. It was built in 1993, so it is 32 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 9,367 vehicles a day, roughly 18% of them trucks, projected to reach 14,051 by 2043. The structure is 325 ft (99.1 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFrtg RD to I165 NB
CrossesBay Bridge RD
LocationI165 @ Bay Bridge RD
RouteInterstate 165
CountyMobile County
StateAlabama
Coordinates30.7311, -88.07642
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating51.4 US tons
Inventory rating30.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length325 ft (99.1 m)
Longest span75 ft (22.9 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,367 (2023)
Projected traffic14,051 by 2043
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$2.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Frtg RD to I165 NB over Bay Bridge RD built?

It was built in 1993, making it 32 years old in 2025.

What condition is Frtg RD to I165 NB over Bay Bridge RD 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 September 2024.

How much traffic does Frtg RD to I165 NB over Bay Bridge RD carry?

About 9,367 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is Frtg RD to I165 NB over Bay Bridge RD?

The structure is 325 ft (99.1 m) long with a longest span of 75 ft (22.9 m) and a deck 28 ft wide.

Who owns Frtg RD to I165 NB over Bay Bridge RD?

It is owned by the State Highway Agency.