US Bridges

Standpipe RD over Bayou Darbonne

Fair

Claiborne Parish, Louisiana · 1.7 Mi. W. of US 79 · Structure no. 041432525930651

Built
1997
28 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
114 ft
6 main spans
Daily traffic
120
2019 count
Owner
County
County Highway Agency

About this bridge

Standpipe RD over Bayou Darbonne is a concrete slab carrying Standpipe RD over Bayou Darbonne in Claiborne Parish, Louisiana. It was built in 1997, so it is 28 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 6 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 120 vehicles a day, projected to reach 132 by 2039. The structure is 114 ft (34.7 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesStandpipe RD
CrossesBayou Darbonne
Location1.7 Mi. W. of US 79
RouteCounty Highway 0
CountyClaiborne Parish
StateLouisiana
Coordinates32.876, -93.10833
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
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 evaluation6: Equal to present minimum criteria
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 rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2019)
Projected traffic132 by 2039
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Standpipe RD over Bayou Darbonne built?

It was built in 1997, making it 28 years old in 2025.

What condition is Standpipe RD over Bayou Darbonne 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 Standpipe RD over Bayou Darbonne carry?

About 120 vehicles per day (2019 count).

How long is Standpipe RD over Bayou Darbonne?

The structure is 114 ft (34.7 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Standpipe RD over Bayou Darbonne?

It is owned by the County Highway Agency.