US Bridges

US 45 Nbl over I-65

Fair

Mobile County, Alabama · JCT I-65 * US 45 · Structure no. 007675

Built
1962
63 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
299 ft
4 main spans
Daily traffic
9,054
2023 count
Owner
State
State Highway Agency

About this bridge

US 45 Nbl over I-65 is a concrete continuous tee beam carrying US 45 Nbl over I-65 in Mobile County, Alabama. It was built in 1962, so it is 63 years old, older 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 5 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 9,054 vehicles a day, roughly 4% of them trucks, projected to reach 13,581 by 2043. The structure is 299 ft (91.1 m) long and 45 ft wide.

CarriesUS 45 Nbl
CrossesI-65
LocationJCT I-65 * US 45
RouteU.S. Route 45
StateAlabama
Coordinates30.74034, -88.1073
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.5 US tons
Inventory rating28.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length299 ft (91.1 m)
Longest span82 ft (25 m)
Deck width45 ft (13.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,054 (2023)
Projected traffic13,581 by 2043
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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$3.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 45 Nbl over I-65 built?

It was built in 1962, making it 63 years old in 2025.

What condition is US 45 Nbl over I-65 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 July 2024.

How much traffic does US 45 Nbl over I-65 carry?

About 9,054 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 45 Nbl over I-65?

The structure is 299 ft (91.1 m) long with a longest span of 82 ft (25 m) and a deck 45 ft wide.

Who owns US 45 Nbl over I-65?

It is owned by the State Highway Agency.