US Bridges

I85 over Mcdonough ST

Fair

Montgomery County, Alabama · 1.06 MI N of I65 · Structure no. 014461

Built
1966
59 years old, rebuilt 1988
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
169 ft
3 main spans
Daily traffic
83,530
2013 count
Owner
State
State Highway Agency

About this bridge

I85 over Mcdonough ST is a concrete continuous tee beam carrying I85 over Mcdonough ST in Montgomery County, Alabama. It was built in 1966 and reconstructed in 1988, so it is 59 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 83,530 vehicles a day, roughly 13% of them trucks, projected to reach 110,089 by 2033. The structure is 169 ft (51.5 m) long and 113 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI85
CrossesMcdonough ST
Location1.06 MI N of I65
RouteInterstate 85
CountyMontgomery County
StateAlabama
Coordinates32.36783, -86.30459
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
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 geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.6 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length169 ft (51.5 m)
Longest span64 ft (19.5 m)
Deck width113 ft (34.5 m)
Roadway width105 ft (32 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83,530 (2013)
Projected traffic110,089 by 2033
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I85 over Mcdonough ST built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1988.

What condition is I85 over Mcdonough 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 June 2023.

How much traffic does I85 over Mcdonough ST carry?

About 83,530 vehicles per day (2013 count), of which roughly 13% are trucks.

How long is I85 over Mcdonough ST?

The structure is 169 ft (51.5 m) long with a longest span of 64 ft (19.5 m) and a deck 113 ft wide.

Who owns I85 over Mcdonough ST?

It is owned by the State Highway Agency.