Page 2 - STSFSJ_CaseStudies.

:
f Transportation and f Transportation and
pen Cell ACB ,000 sf
4 and 1988
Holly Beach project sOiteWisNloEcaRted: in Cameron Parish, in extreme
Cameron Parish, Louisiana
ACB SHORELINE PROTECTION
Holly Beach Holly Beach
Cameron Parish, Louisiana Cameron Parish, Louisiana
HOLLY BEACH
Protecting our NATURAL resources. Protecting our NATURAL resources.
Shoreline Protection Shoreline Protection
Land Side after Hurricane Ike (2008)
PROJECT TEAM
ProjjectTeam Members:
Owner::
State of Louisiana
southwestern Louisiana. The Chenier Ridge that supports LA Hwy
LouiisiianaDepartmentofTransportationand
82 is the last line of defense protecting thousands of acres of
Devellopment
intermediate marsh habitat in the Sabine National Wildlife Refuge
ENGINEER:
Engiineer::
from the Gulf of Mexico. LA Hwy 82, the only east-west road in the
Louisiana Dept. of Transportation
LouiisiianaDepartmentofTransportationand
area, also serves as the only Hurricane evacuation route for local
Devellopment
communities providing residents of Johnson’s Bayou, Ocean View
Technical Description: Technical Description:
SUPPLIER:
Beach, Constance Beach, and Holly Beach egress west to east, and
Product: 9” Open Cell ACB Product: 9” Open Cell ACB
then northward on LA 27.Area: 465,000 sf Area: 465,000 sf
Premier Concrete Products, Inc.
Installation Date: 1984 and 1988 Installation Date: 1984 and 1988
Shoreline erosion in this area is caused by Mississippi River
TECHNICAL DESCRIPTION:
channelization and Calcasieu Ship Channel jetties, limiting sediment
transport availability, Panroddiuscatc: celerated bSyhofrreqbuloecnkt sStoDrm90e0vents.
Block Type: Open Cell
Prior to the 1984 and 1988 ACB armoring projects, shoreline erosion
is located in Cameron Parish, in extreme is located in Cameron Parish, in extreme
. The Chenier Ridge that supports LA Hwy . The Chenier Ridge that supports LA Hwy
efense protecting thousands of acres of efense protecting thousands of acres of
itat in the Sabine National Wildlife Refuge itat in the Sabine National Wildlife Refuge
. LA Hwy 82, the only east-west road in the . LA Hwy 82, the only east-west road in the
only Hurricane evacuation route for local only Hurricane evacuation route for local residents of Johnson’s Bayou, Ocean View residents of Johnson’s Bayou, Ocean View , and Holly Beach egress west to east, and , and Holly Beach egress west to east, and
7. 7.
his area is caused by Mississippi River his area is caused by Mississippi River
in the project area was occurring at rate of 24 ft. per year.
Square Feet: 465,0so0u0thwestern Louisiana
Holly Beach project site Holly Beach project site
southwestern Louisiana
82 is the last line of d Thickness: 9” 82 is the last line of d
Following several unsuccessful shoreline armoring projects in 1970 intermediate marsh hab and 1977, the LouisiaInastDalelaptaiortnmDeanteo: f 1T9ra8n4isnptoertmateidoniatuetimlizaerdsh9h” ab
from the Gulf of Mexico thick ACB mattresses on two subsequent projects completed in
1984 and 1988.
area, also serves as the area, also serves as the communities providing communities providing Beach, Constance Beach
Since completion of these two Gulf-Side ArBmeoarcihn,gCpornosjteacntcs,etBheach then northward on LA 2 site has experienced numerous Tropical Stothrmens naonrdthHwuarrdicoaneLsA 2
during the last 20 year period, including a direct hit from Rita in Shoreline erosion in t 2005 and significant effects from Ike in 2008. ASlthhooruelginhetherhoisgiohnwaiyn t
from the Gulf of Mexico
channelization and Calcasieu Ship Channel jetties, limiting sediment
has sustained repeated damage on the ucnh-anrmneolrizeadtiolannadnsdidCealcasieuShipChanneljetties,limitingsediment GuLf sideGauftlfeSridHeurarftiecraHneurikrieca(2n0e08I)ke (2008)
Land Side after Hurricane Ike (2008)
transport availability, and is accelerated by frequent storm events.
Land side after Hurricane ike (2008)
during overtopping events, the armored Gultfrasindsepohratsapveariflaobrmilietyd, and is accelerated by frequent storm events. Prior to the 1984 and 1988 ACB armoring projects, shoreline erosion exceptionally, whilePrporjeevcetntDinegscarnipytisoign:ificParniotr tdoatmheag1e98t4oanthde1988 ACB armoring projects, shoreline erosion
Land Side after Hurricane Ike (2008)
armored (Gulf ) side of Hwy 821.
• www.shoretec.com
Problem: site has experienced numerous Tropical Storms and Hurricanes site has experienced numerous Tropical Storms and Hurricanes
in the project area was occurring at rate of 24 ft. per year.
The Holly Beach project sitnetihselopcraotjedctinarCeamwearosnocPcaurrisrhin,ginaetxratrtemoef 2so4uft.hpweersyteranr.Louisiana. The Chenier Ridge that supports LA Hwy 82 is
the last line of defense protecting thousands of acres of intermediate marsh habitat in the Sabine National Wildlife Refuge from the Gulf of Following several unsuccessful shoreline armoring projects in 1970
1 Naghavi, B ; Allain, P A. Shoreline Stabilization to Protect Louisiana Highway 82. Transportation Research Record 1279. p. 11-23. 1990. Following several unsuccessful shoreline armoring projects in 1970 Mexico. and 1977, the Louisiana Department of Transportation utilized 9”
and 1977, the Louisiana Department of Transportation utilized 9” thick ACB mattresses on two subsequent projects completed in
LAHwy82,theonlyeast-wtheisctkroAaCdBinmthatetraersesae,salosonstewrvoesuabsstheqeuoennlytHpurorrjieccatnseceovmacpuleateiodnirnouteforlocalcommunities;providingresidents 1984 and 1988.
of Johnson’s Bayou, Ocean19V8ie4waBneda1c9h8, 8C.onstance Beach, and Holly Beach egress west to east, and then northward on LA 27.
Since completion of these two Gulf-Side Armoring projects, the Since completion of these two Gulf-Side Armoring projects, the
Shoreline erosion in this adruerainisg ctahueseladstb2y0thyeaMr ipsseirsisoipdp, inRcilvuedrincghaanndeirleizcattihoint farnodmCRailtcaasinieu Ship Channel jetties, which limits sediment
during the last 20 year period, including a direct hit from Rita in 2005 and significant effects from Ike in 2008. Although the highway
transport availability, and is also accelerated by frequent storm events. Prior to the 1984 and 1988 ACB armoring projects, shoreline erosion
2h0a0s5saunsdtasiingendificreapnetaetffeedctdsafrmomagIekeoin2t0h0e8.uAnlt-haormugohrethdehlaingdhswidaey in the project area was occurring at rate of 24 ft. per year.
Gulf Side after Hurricane Ike (2008) Gulf Side after Hurricane Ike (2008)
Followingseveralunsucceasrsmfuolrsehdor(Geluinlfe)asridmeoorifnHgwpyro8je2c1.tsin1970and1977,theLouisianaDepartmentofTransportationutilizedSD900OC
hdausrinsgusotavienretodppreinpgeaetveedntdsa,mthaegaermoonretdheGulnf-saidremhoarsedpelrafnordmsiedde
deuxcrienpgtiovnearlltyo,pwpihnigleepverenvtes,nthinegaramnyoresidgnGiufilcfasnidtedhamasapgerftoormthede
Solution: exceptionally, while preventing any significant damage to the armored (Gulf ) side of Hwy 821.
1 Naghavi, B ; Allain, P A. Shoreline Stabilization to Protect Louisiana Highway 82. Transportation Research Record 1279. p. 11-23. 1990.
ACB mattresses on two subsequent projects completed in 1984 and 1988. Since completion of these two Gulf-Side armoring projects, the site
1 Naghavi, B ; Allain, P A. Shoreline Stabilization to Protect Louisiana Highway 82. Transportation Research Record 1279. p. 11-23. 1990.
has experienced numerous tropical storms and hurricanes during the last 20-year period, including a direct hit from Hurricane Rita in 2005
and significant effects from Hurricane Ike in 2008. Although the highway has sustained repeated damage on the un-armored landside during
overtopping events, the ShoreBlock® armored Gulf side has performed exceptionally, preventing any significant damage to the armored
(Gulf ) side of Hwy 821.
225-408-1444 • www.shoretec.com 225-408-1444 • www.shoretec.com
www.shoretec.com
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case study