US Bridges

10 TH Ave S over Key Branch

Fair

Marion County, Alabama · 0.2 MI W JCT US 43 · Structure no. 018663

Built
2000
25 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
35 ft
4 main spans
Daily traffic
280
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

10 TH Ave S over Key Branch is a concrete culvert carrying 10 TH Ave S over Key Branch in Marion County, Alabama. It was built in 2000, so it is 25 years old, younger 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 280 vehicles a day, roughly 5% of them trucks, projected to reach 350 by 2036. The structure is 35 ft (10.7 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries10 TH Ave S
CrossesKey Branch
Location0.2 MI W JCT US 43
RouteCity Street 0
CountyMarion County
StateAlabama
Coordinates34.11694, -87.99869
Functional classRural 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span8 ft (2.4 m)
Deck width37 ft (11.3 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic280 (2016)
Projected traffic350 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost$408,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 10 TH Ave S over Key Branch built?

It was built in 2000, making it 25 years old in 2025.

What condition is 10 TH Ave S over Key Branch 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 January 2024.

How much traffic does 10 TH Ave S over Key Branch carry?

About 280 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is 10 TH Ave S over Key Branch?

The structure is 35 ft (10.7 m) long with a longest span of 8 ft (2.4 m) and a deck 37 ft wide.

Who owns 10 TH Ave S over Key Branch?

It is owned by the City or Municipal Highway Agency.