US Bridges

11th Ave N over Frisco RR

Fair

Jefferson County, Alabama · 11th Ave N & 27th ST · Structure no. 000911

Built
1931
94 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
73 ft
3 main spans
Daily traffic
600
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

11th Ave N over Frisco RR is a concrete slab carrying 11th Ave N over Frisco RR in Jefferson County, Alabama. It was built in 1931, so it is 94 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 600 vehicles a day, roughly 2% of them trucks, projected to reach 1,000 by 2038. The structure is 73 ft (22.3 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries11th Ave N
CrossesFrisco RR
Location11th Ave N & 27th ST
RouteCity Street 0
CountyJefferson County
StateAlabama
Coordinates33.53021, -86.80387
Functional classUrban Local

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 inspectionMarch 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 geometry9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length73 ft (22.3 m)
Longest span30 ft (9.1 m)
Deck width70 ft (21.3 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2018)
Projected traffic1,000 by 2038
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$1.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 11th Ave N over Frisco RR built?

It was built in 1931, making it 94 years old in 2025.

What condition is 11th Ave N over Frisco RR 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 March 2024.

How much traffic does 11th Ave N over Frisco RR carry?

About 600 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is 11th Ave N over Frisco RR?

The structure is 73 ft (22.3 m) long with a longest span of 30 ft (9.1 m) and a deck 70 ft wide.

Who owns 11th Ave N over Frisco RR?

It is owned by the City or Municipal Highway Agency.