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LYNDON RIVER BRIDGE CONSTRUCTION MINILYA- EXMOUTH RD

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The Minilya-Exmouth Road (H048) connects the towns of Coral Bay and Exmouth with North West Coastal Highway (NWCH) at Minilya to the south and via Burkett Rd to the east. Although this road has historically functioned as a link for pastoral industry and defense facilities at Exmouth, over the past 10 years there has been a significant increase in tourist traffic using the Minilya-Exmouth Road to visit tourist facilities within this area. The Lyndon River crossing on the Minilya – Exmouth road is a low-level floodway, subject to frequent closures in wet years.

This link on the Minilya - Exmouth road has been impassable due to water over the road for 90 days since 1992 giving an average of 7 days of road closure per year. The objective of this project is to reduce the impact of flooding on Service Delivery on this road due to the crossing of the road by the Lyndon River and subsequent closures. Following the installation of the bridge, it is anticipated that road closures on the Minilya – Exmouth road will be reduced to an average of 1 day per year, thereby improving the Level of Service for commercial traffic, tourists, pastoral stations, mines, defense establishments and settled communities. in the region.

The project proposal is to construct a 90m long two-lane bridge (span 5 x 18m), 400m floodway and 1.36km access road to replace the existing low level crossing. Main Roads Western Australia Page 3 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report Data\2008\Electronic Reports\Project Number 8.

P ROJECT L OCATION

C:\Documents and Settings\juliap\Desktop\Main Road Annual Report\Main Roads WA - CPS 818 Annual Report Data\2008\Electronic Reports\Project Number 8.

Figure 2 –Map showing location of proposed  bridge and Section 19’s (Material Extraction  Sites)
Figure 2 –Map showing location of proposed bridge and Section 19’s (Material Extraction Sites)

P RELIMINARY D ESKTOP S TUDY

An on-site survey of the project areas was conducted to determine if there are known populations of declared plants or significant weeds in or adjacent to the project area. The decision to refer the project to the Commonwealth's DEH was based on whether the project would affect matters of national importance, e.g. World Heritage properties, protected wetlands and migratory species, Commonwealth marine areas, threatened species or communities or nuclear actions (see the Commonwealth website www.deh.gov.au/epbc/assessmentsapprovals/index.html for further information and the search tools page at http://www .deh.gov.au/erin/ert/epbc/imap/map.html), see Appendix F.

S ITE I NVESTIGATION

D ESCRIPTION

S ITE I NVESTIGATION

The term does not include vegetation that has been deliberately sown, planted or propagated unless required by law. Except for activities exempted under the clearing regulations, such as the clearing of vegetation less than 10 years old for maintenance purposes, generally all clearing of main roads is carried out by permit for the purposes of a statewide project.

A SSESSMENT AGAINST C LEARING P RINCIPLES

E NVIRONMENTALLY S ENSITIVE A REA (ESA)

Given the small area of ​​the clearing and the mobile nature of the species, no effects are expected. The Mulgara was reported as possibly occurring in the area, but no impacts are expected given the highly mobile nature of the species. Be aware that specimens have been collected and recorded further inland in the region and their distribution is not as close to the coast.

A search of the DIA database did not identify any known sites of Aboriginal heritage interest in the vicinity of the project area. Provided that traffic management and directions are used according to Highway Standards, none of the proposed works pose any significant public safety hazards. Pollution Given the relatively shallow nature of the earthworks required, there appears to be no risk of any significant pollution issues.

Given the scale of the project, the low significance of its impact on the surrounding environment and the proposed environmental management measures, the project does not require referral to the WA Environmental Protection Authority or the Commonwealth Department of Environment and Heritage. This section of the report (the OBP) was developed for the project area after the completion of the above sections.

Table 1: Aspects and Impacts – Material Pit Extension – 175 SLK – Minilya Exmouth Road   Aspect  Evaluation of Potential Impacts
Table 1: Aspects and Impacts – Material Pit Extension – 175 SLK – Minilya Exmouth Road Aspect Evaluation of Potential Impacts

C OMMUNICATION P LAN

Main Roads Western Australia Page 14 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report. Main Roads Western Australia Page 17 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report. Main Roads Western Australia Page 18 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report.

Main Roads Western Australia Page 19 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads annual report\Main Roads WA - CPS 818 Annual Report. Main Roads Western Australia Page 20 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report. Main Roads Western Australia Page 26 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads annual report\Main Roads WA - CPS 818 Annual report.

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Main Roads Western Australia Page 35 of 47 C:\Documents and Settings\juliap\Desktop\Main roads annual report\Main Roads WA - Annual Report CPS 818. Main Roads Western Australia Page 36 of 47 C:\Documents and Settings\juliap\ Desktop\Main roads annual report\Main Roads WA - Annual report CPS 818. Main roads Western Australia Page 37 of 47 C:\Documents and Settings\juliap\Desktop\Main roads annual report\Main Roads WA - Annual report CPS 818.

Main Roads Western Australia Page 38 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report. Main Roads Western Australia Page 39 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report. Main Roads Western Australia Page 40 of 47 C:\Documents and Settings\juliap\Desktop\Main Roads Annual Report\Main Roads WA - CPS 818 Annual Report.

Main Roads Western Australia Page 41 of 47 C:\Documents and Settings\juliap\Desktop\Main roads annual report\Main Roads WA - CPS 818 Annual Report.

Figure

Figure 2 –Map showing location of proposed  bridge and Section 19’s (Material Extraction  Sites)
Table 1: Aspects and Impacts – Material Pit Extension – 175 SLK – Minilya Exmouth Road   Aspect  Evaluation of Potential Impacts

References

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