US Bridges

Cook RD over Ash Slough

Poor

Richland Parish, Louisiana · Logmi 2.70 FR 271 to · Structure no. 054232260913361

Built
1984
41 years old
Condition
Poor
inspected June 2024
Type
Culvert
Steel
Length
21 ft
3 main spans
Daily traffic
70
1974 count
Owner
County
County Highway Agency

About this bridge

Cook RD over Ash Slough is a steel culvert carrying Cook RD over Ash Slough in Richland Parish, Louisiana. It was built in 1984, so it is 41 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 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: open, temporary structure in place while original is closed.

It carries about 70 vehicles a day, projected to reach 77 by 1994. The structure is 21 ft (6.4 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCook RD
CrossesAsh Slough
LocationLogmi 2.70 FR 271 to
RouteCounty Highway 0
Coordinates32.43485, -91.56032
Functional classRural Local

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
Culvert0 FailedOut of service and beyond corrective action.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span6 ft (1.8 m)
Deck width60 ft (18.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (1974)
Projected traffic77 by 1994
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cook RD over Ash Slough built?

It was built in 1984, making it 41 years old in 2025.

What condition is Cook RD over Ash Slough 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 June 2024.

How much traffic does Cook RD over Ash Slough carry?

About 70 vehicles per day (1974 count).

How long is Cook RD over Ash Slough?

The structure is 21 ft (6.4 m) long with a longest span of 6 ft (1.8 m) and a deck 60 ft wide.

Who owns Cook RD over Ash Slough?

It is owned by the County Highway Agency.