US Bridges

Co. Rd. 484 over Mush Creek

Fair

DeKalb County, Alabama · 300FT East I59 T8SR8E · Structure no. 007829

Built
1962
63 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
62 ft
5 main spans
Daily traffic
72
2024 count
Owner
County
County Highway Agency

About this bridge

Co. Rd. 484 over Mush Creek is a concrete culvert carrying Co. Rd. 484 over Mush Creek in DeKalb County, Alabama. It was built in 1962, so it is 63 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 72 vehicles a day, roughly 3% of them trucks, projected to reach 107 by 2044. The structure is 62 ft (19 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCo. Rd. 484
CrossesMush Creek
Location300FT East I59 T8SR8E
RouteCounty Highway 83S
CountyDeKalb County
StateAlabama
Coordinates34.33407, -85.83072
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 inspectionFebruary 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.2 US tons
Inventory rating27.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 15
Structure length62 ft (19 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic72 (2024)
Projected traffic107 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$617,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co. Rd. 484 over Mush Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Co. Rd. 484 over Mush Creek 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 February 2024.

How much traffic does Co. Rd. 484 over Mush Creek carry?

About 72 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Co. Rd. 484 over Mush Creek?

The structure is 62 ft (19 m) long with a longest span of 12 ft (3.7 m).

Who owns Co. Rd. 484 over Mush Creek?

It is owned by the County Highway Agency.