US Bridges

Olsen Ave over Barriere Road

PoorPosted for load

Plaquemines Parish, Louisiana · 1.8 Mi. S. of Hwy. 23 · Structure no. 023829515900061

Built
1960
65 years old
Condition
Poor
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
151 ft
5 main spans
Daily traffic
—
2016 count
Owner
County
County Highway Agency

About this bridge

Olsen Ave over Barriere Road is a steel stringer/multi-beam or girder carrying Olsen Ave over Barriere Road in Plaquemines Parish, Louisiana. It was built in 1960, so it is 65 years old, older 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 4 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.

No traffic count is recorded. The structure is 151 ft (46 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesOlsen Ave
CrossesBarriere Road
Location1.8 Mi. S. of Hwy. 23
RouteCounty Highway 0
CountyPlaquemines Parish
StateLouisiana
Coordinates29.85797, -90.0105
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length151 ft (46 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$493,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Olsen Ave over Barriere Road built?

It was built in 1960, making it 65 years old in 2025.

What condition is Olsen Ave over Barriere Road 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 January 2023.

How much traffic does Olsen Ave over Barriere Road carry?

No traffic count is recorded for this structure.

How long is Olsen Ave over Barriere Road?

The structure is 151 ft (46 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns Olsen Ave over Barriere Road?

It is owned by the County Highway Agency.