US Bridges

Bosco Lane over Bayou Lafourch

Fair

Richland Parish, Louisiana · Richland Ph Road No 60 · Structure no. 054232169920161

Built
1997
28 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
450 ft
9 main spans
Daily traffic
100
1979 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Bosco Lane over Bayou Lafourch is a prestressed concrete stringer/multi-beam or girder carrying Bosco Lane over Bayou Lafourch in Richland 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 100 vehicles a day, projected to reach 110 by 1999. The structure is 450 ft (137.2 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesBosco Lane
CrossesBayou Lafourch
LocationRichland Ph Road No 60
RouteCounty Highway 0
CountyRichland Parish
StateLouisiana
Coordinates32.28094, -92.03064
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length450 ft (137.2 m)
Longest span50 ft (15.2 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1979)
Projected traffic110 by 1999
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

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bosco Lane over Bayou Lafourch built?

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

What condition is Bosco Lane over Bayou Lafourch 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 August 2023.

How much traffic does Bosco Lane over Bayou Lafourch carry?

About 100 vehicles per day (1979 count).

How long is Bosco Lane over Bayou Lafourch?

The structure is 450 ft (137.2 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.

Who owns Bosco Lane over Bayou Lafourch?

It is owned by the Town or Township Highway Agency.