US Bridges

MU12 over I85

Good

Lee County, Alabama · 1.5 MI S JCT US29(EXIT50) · Structure no. 020356

Built
2012
13 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
280 ft
2 main spans
Daily traffic
1,000
2012 count
Owner
State
State Highway Agency

About this bridge

MU12 over I85 is a prestressed concrete stringer/multi-beam or girder carrying MU12 over I85 in Lee County, Alabama. It was built in 2012, so it is 13 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,400 by 2034. The structure is 280 ft (85.4 m) long and 94 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMU12
CrossesI85
Location1.5 MI S JCT US29(EXIT50)
RouteCity Street 12
StateAlabama
Coordinates32.54726, -85.52781
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating50.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length280 ft (85.4 m)
Longest span138 ft (42.1 m)
Deck width94 ft (28.8 m)
Roadway width93 ft (28.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2012)
Projected traffic1,400 by 2034
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$6.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was MU12 over I85 built?

It was built in 2012, making it 13 years old in 2025.

What condition is MU12 over I85 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does MU12 over I85 carry?

About 1,000 vehicles per day (2012 count), of which roughly 1% are trucks.

How long is MU12 over I85?

The structure is 280 ft (85.4 m) long with a longest span of 138 ft (42.1 m) and a deck 94 ft wide.

Who owns MU12 over I85?

It is owned by the State Highway Agency.