US Bridges

Powell RD over Blue Bayou Diversion

Fair

Allen Parish, Louisiana · 4.3 MI S of LA 26 · Structure no. 070200000500891

Built
2009
16 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
180 ft
9 main spans
Daily traffic
446
2019 count
Owner
County
County Highway Agency

About this bridge

Powell RD over Blue Bayou Diversion is a concrete slab carrying Powell RD over Blue Bayou Diversion in Allen Parish, Louisiana. It was built in 2009, so it is 16 years old, younger than the Louisiana average of 43 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 446 vehicles a day, projected to reach 490 by 2039. The structure is 180 ft (54.9 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesPowell RD
CrossesBlue Bayou Diversion
Location4.3 MI S of LA 26
RouteCounty Highway 0
CountyAllen Parish
StateLouisiana
Coordinates30.55024, -92.71768
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans9
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic446 (2019)
Projected traffic490 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Powell RD over Blue Bayou Diversion built?

It was built in 2009, making it 16 years old in 2025.

What condition is Powell RD over Blue Bayou Diversion 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 October 2023.

How much traffic does Powell RD over Blue Bayou Diversion carry?

About 446 vehicles per day (2019 count).

How long is Powell RD over Blue Bayou Diversion?

The structure is 180 ft (54.9 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns Powell RD over Blue Bayou Diversion?

It is owned by the County Highway Agency.