US Bridges

I-165 NB to I65 NB over I-65 * Gum Tree Branch

Fair

Mobile County, Alabama · I-165 * I-65 Interchange · Structure no. 015588

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,361 ft
18 main spans
Daily traffic
12,034
2023 count
Owner
State
State Highway Agency

About this bridge

I-165 NB to I65 NB over I-65 * Gum Tree Branch is a prestressed concrete continuous stringer/multi-beam or girder carrying I-165 NB to I65 NB over I-65 * Gum Tree Branch 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 12,034 vehicles a day, roughly 13% of them trucks, projected to reach 18,051 by 2043. The structure is 1,361 ft (414.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-165 NB to I65 NB
CrossesI-65 * Gum Tree Branch
LocationI-165 * I-65 Interchange
RouteInterstate 165
CountyMobile County
StateAlabama
Coordinates30.75571, -88.0931
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.1 US tons
Inventory rating23.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans18
Design loadHS 20
Structure length1,361 ft (414.8 m)
Longest span77 ft (23.5 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,034 (2023)
Projected traffic18,051 by 2043
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$13.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-165 NB to I65 NB over I-65 * Gum Tree Branch built?

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

What condition is I-165 NB to I65 NB over I-65 * Gum Tree Branch 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 I-165 NB to I65 NB over I-65 * Gum Tree Branch carry?

About 12,034 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is I-165 NB to I65 NB over I-65 * Gum Tree Branch?

The structure is 1,361 ft (414.8 m) long with a longest span of 77 ft (23.5 m) and a deck 43 ft wide.

Who owns I-165 NB to I65 NB over I-65 * Gum Tree Branch?

It is owned by the State Highway Agency.