US Bridges

CO.RT.487 over Branch of Six Mile Crk

PoorPosted for load

Marengo County, Alabama · 2.9MI.SW AL.28 · Structure no. 014297

Built
1987
38 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
54 ft
2 main spans
Daily traffic
50
1990 count
Owner
County
County Highway Agency

About this bridge

CO.RT.487 over Branch of Six Mile Crk is a steel continuous stringer/multi-beam or girder carrying CO.RT.487 over Branch of Six Mile Crk in Marengo County, Alabama. It was built in 1987, so it is 38 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 70 by 2041. The structure is 54 ft (16.5 m) long and 14 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCO.RT.487
CrossesBranch of Six Mile Crk
Location2.9MI.SW AL.28
RouteCounty Highway 487
CountyMarengo County
StateAlabama
Coordinates32.34664, -87.91151
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating3 US tons
Inventory rating2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans2
Design loadH 10
Structure length54 ft (16.5 m)
Longest span54 ft (16.5 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1990)
Projected traffic70 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$248,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO.RT.487 over Branch of Six Mile Crk built?

It was built in 1987, making it 38 years old in 2025.

What condition is CO.RT.487 over Branch of Six Mile Crk in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does CO.RT.487 over Branch of Six Mile Crk carry?

About 50 vehicles per day (1990 count).

How long is CO.RT.487 over Branch of Six Mile Crk?

The structure is 54 ft (16.5 m) long with a longest span of 54 ft (16.5 m) and a deck 14 ft wide.

Who owns CO.RT.487 over Branch of Six Mile Crk?

It is owned by the County Highway Agency.