US Bridges

I-65 SB to I165 SB over I-65 * Gum Tree Branch

Fair

Mobile County, Alabama · I-165 * I-65 Interchange · Structure no. 015586

Built
1993
32 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,270 ft
4 main spans
Daily traffic
11,237
2021 count
Owner
State
State Highway Agency

About this bridge

I-65 SB to I165 SB over I-65 * Gum Tree Branch is a steel continuous stringer/multi-beam or girder carrying I-65 SB to I165 SB 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 11,237 vehicles a day, roughly 10% of them trucks, projected to reach 16,856 by 2041. The structure is 2,270 ft (691.9 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-65 SB to I165 SB
CrossesI-65 * Gum Tree Branch
LocationI-165 * I-65 Interchange
RouteInterstate 165
CountyMobile County
StateAlabama
Coordinates30.75728, -88.09328
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 rating43 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+24 approach)
Design loadHS 20
Structure length2,270 ft (691.9 m)
Longest span160 ft (48.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck19 ft (5.7 m)

Traffic and service

Average daily traffic11,237 (2021)
Projected traffic16,856 by 2041
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
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$21.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-65 SB to I165 SB over I-65 * Gum Tree Branch built?

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

What condition is I-65 SB to I165 SB 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 December 2024.

How much traffic does I-65 SB to I165 SB over I-65 * Gum Tree Branch carry?

About 11,237 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is I-65 SB to I165 SB over I-65 * Gum Tree Branch?

The structure is 2,270 ft (691.9 m) long with a longest span of 160 ft (48.8 m) and a deck 43 ft wide.

Who owns I-65 SB to I165 SB over I-65 * Gum Tree Branch?

It is owned by the State Highway Agency.