US Bridges

I65 Sbl/Nbl over Day ST

Fair

Montgomery County, Alabama · 0.2 Mi.N.Of I85 Interchng · Structure no. 010876

Built
1973
52 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
196 ft
3 main spans
Daily traffic
38,750
2013 count
Owner
State
State Highway Agency

About this bridge

I65 Sbl/Nbl over Day ST is a steel continuous stringer/multi-beam or girder carrying I65 Sbl/Nbl over Day ST in Montgomery County, Alabama. It was built in 1973, so it is 52 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 38,750 vehicles a day, roughly 12% of them trucks, projected to reach 49,093 by 2033. The structure is 196 ft (59.6 m) long and 183 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI65 Sbl/Nbl
CrossesDay ST
Location0.2 Mi.N.Of I85 Interchng
RouteInterstate 65
CountyMontgomery County
StateAlabama
Coordinates32.36938, -86.32272
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
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating74.3 US tons
Inventory rating44.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length196 ft (59.6 m)
Longest span74 ft (22.5 m)
Deck width183 ft (55.7 m)
Roadway width65 ft (19.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,750 (2013)
Projected traffic49,093 by 2033
Trucks12%
Lanes on structure11
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 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$9.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I65 Sbl/Nbl over Day ST built?

It was built in 1973, making it 52 years old in 2025.

What condition is I65 Sbl/Nbl over Day ST 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 April 2023.

How much traffic does I65 Sbl/Nbl over Day ST carry?

About 38,750 vehicles per day (2013 count), of which roughly 12% are trucks.

How long is I65 Sbl/Nbl over Day ST?

The structure is 196 ft (59.6 m) long with a longest span of 74 ft (22.5 m) and a deck 183 ft wide.

Who owns I65 Sbl/Nbl over Day ST?

It is owned by the State Highway Agency.