US Bridges

SR 77 over Atn R/R

Fair

Calhoun County, Alabama · 1 MI So JCT SR 144 · Structure no. 006349

Built
1958
67 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
150 ft
3 main spans
Daily traffic
5,994
2023 count
Owner
State
State Highway Agency

About this bridge

SR 77 over Atn R/R is a concrete tee beam carrying SR 77 over Atn R/R in Calhoun County, Alabama. It was built in 1958, so it is 67 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 5,994 vehicles a day, roughly 16% of them trucks, projected to reach 8,392 by 2043. The structure is 150 ft (45.7 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 77
CrossesAtn R/R
Location1 MI So JCT SR 144
RouteState Highway 77
CountyCalhoun County
StateAlabama
Coordinates33.76922, -86.04104
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.3 US tons
Inventory rating24.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,994 (2023)
Projected traffic8,392 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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$1.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 77 over Atn R/R built?

It was built in 1958, making it 67 years old in 2025.

What condition is SR 77 over Atn R/R 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 2024.

How much traffic does SR 77 over Atn R/R carry?

About 5,994 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SR 77 over Atn R/R?

The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns SR 77 over Atn R/R?

It is owned by the State Highway Agency.