Chef Menteur Bridge and

Approaches

Louisiana Transportation

Conference 2013

Lynn Maloney-Mújica, AICP

Imagine the result

Stage 0 Feasibility Study

and

Stage 1 Environmental Assessment

Bridge Replacement Project

Chef

Menteur

Bridge and

Approaches

FAP and SP

No.

H000263

Chef Bridge

Deficiencies

Related to

Age and

Design

• Lack of

Shoulders

• Narrow travel

lanes

• Stopping sight

distances

• Load posted

• Reduced speed

© 2012 ARCADIS 27 February 2013 10

Structural

Deficiencies

© 2012 ARCADIS 27 February 2013 11

Needs

• Meet current standards for

design and structural capacity

• Improve operational efficiency

of US 90 for transportation and

as an alternative evacuation

route

• Address operational reliability

and reduce maintenance costs

• Raise roadway above surge

elevation

• Improve utility for bicyclists

• Feasibility

• Environmental Checklist

• Public Outreach

• Alternative Alignments

• Navigational Clearances

Sta

ge

0

National Environmental Policy Act (NEPA) Review

–Environmental Assessment (EA)

– Impact Analysis

–Public and Agency Involvement

–Line and Grade

–Finding of No Significant Impacts (FONSI)

–Decision Documentation

Sta

ge

1

© 2012 ARCADIS 27 February 2013 14

And you are the only bridge in town!

NEPA

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Community

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Visual Impacts

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Other

Issues

• Hazardous

Waste

• Noise

• Relocations

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Navigation

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Addendum to Navigation Height Study

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Wetlands and

Essential Fish

Habitat

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© 2012 ARCADIS 27 February 2013 25

Section 106

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Historic and Archaeological

Resources

• Fort Macomb Structure

• Fort Macomb NRHP Property

• Archaeological Sites

• Historic Bridge

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Threatened and

Endangered

Species

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• West Indian

manatee

• Gulf sturgeon

• Green sea

turtle

• Kemp’s ridley

sea turtle

• Loggerhead

sea turtle

Protected

Species

© 2012 ARCADIS 27 February 2013 31

Section 4(f)

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Fort Macomb State Park

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Historic Resources Historic

Resources

• Historic Bridge

• Fort Macomb

Structure

• Fort Macomb

Property

• Archaeological

sites

© 2012 ARCADIS 27 February 2013 35 © 2012 ARCADIS 27 February 2013 35

Avoidance Alternative 4

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Permits, Mitigation, and

Commitments

• Coastal Use and Wetlands

Permit

• New Bridge Permit

• Protective measures

during construction

• Memorandum of

Agreement

• Marketing the Bridge

• Historic American

Engineering Record

(HAER)

© 2012 ARCADIS 27 February 2013 38

© 2012 ARCADIS 27 February 2013 39

© 2012 ARCADIS 27 February 2013 40

Imagine the result