US Bridges

CR 820 over Rock Creek

FairPosted for load

Cullman County, Alabama · CR 820 · Structure no. 002988

Built
1947
78 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
1 main span
Daily traffic
60
1991 count
Owner
County
County Highway Agency

About this bridge

CR 820 over Rock Creek is a steel stringer/multi-beam or girder carrying CR 820 over Rock Creek in Cullman County, Alabama. It was built in 1947, so it is 78 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. Its operating status is: posted for load restriction.

It carries about 60 vehicles a day, projected to reach 90 by 2036. The structure is 48 ft (14.6 m) long and 14 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 820
CrossesRock Creek
LocationCR 820
RouteCounty Highway 0
CountyCullman County
StateAlabama
Coordinates34.12425, -86.97022
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating10.3 US tons
Inventory rating7.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span27 ft (8.2 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (1991)
Projected traffic90 by 2036
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$226,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 820 over Rock Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is CR 820 over Rock 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 November 2023.

How much traffic does CR 820 over Rock Creek carry?

About 60 vehicles per day (1991 count).

How long is CR 820 over Rock Creek?

The structure is 48 ft (14.6 m) long with a longest span of 27 ft (8.2 m) and a deck 14 ft wide.

Who owns CR 820 over Rock Creek?

It is owned by the County Highway Agency.