US Bridges

AL9 Sbl over I 85 Nbl

Fair

Montgomery County, Alabama · E Bypass * I-85 Interchan · Structure no. 008257

Built
1964
61 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete Continuous
Length
192 ft
3 main spans
Daily traffic
23,430
2011 count
Owner
State
State Highway Agency

About this bridge

AL9 Sbl over I 85 Nbl is a concrete continuous tee beam carrying AL9 Sbl over I 85 Nbl in Montgomery County, Alabama. It was built in 1964, so it is 61 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 23,430 vehicles a day, roughly 4% of them trucks, projected to reach 38,395 by 2031. The structure is 192 ft (58.5 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAL9 Sbl
CrossesI 85 Nbl
LocationE Bypass * I-85 Interchan
RouteU.S. Route 80
CountyMontgomery County
StateAlabama
Coordinates32.36223, -86.2141
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.5 US tons
Inventory rating36.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span73 ft (22.3 m)
Deck width55 ft (16.7 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,430 (2011)
Projected traffic38,395 by 2031
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was AL9 Sbl over I 85 Nbl built?

It was built in 1964, making it 61 years old in 2025.

What condition is AL9 Sbl over I 85 Nbl 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 November 2023.

How much traffic does AL9 Sbl over I 85 Nbl carry?

About 23,430 vehicles per day (2011 count), of which roughly 4% are trucks.

How long is AL9 Sbl over I 85 Nbl?

The structure is 192 ft (58.5 m) long with a longest span of 73 ft (22.3 m) and a deck 55 ft wide.

Who owns AL9 Sbl over I 85 Nbl?

It is owned by the State Highway Agency.