WHERE THE RIVER MEETS THE ROAD:

MassDOT’s Stream Crossing Handbook

Northeastern Transportation &

Wildlife Conference

September 12, 2018

David Nyman, P.E. Comprehensive Environmental Inc.

9/20/2018 2

Current Update of MassDOTStream Crossing Handbook

Originally published 2010

9/20/2018 3

Current Update of MassDOTStream Crossing Handbook

Originally published 2010

Updated Handbook (2018):

• Technical, practical focus

• Current best crossing practices

• Current stream crossing

regulations

• Technical guidance for

municipalities

• Prototype design templates

1. Introduction

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Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

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Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

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Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

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Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

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Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

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Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

7. “Design Development” for Municipal Projects

Chapter 85 Section 35 Review

109/20/2018

Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

7. “Design Development” for Municipal Projects

Chapter 85 Section 35 Review

8. Prototype Design Templates

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Handbook Contents

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

7. “Design Development” for Municipal Projects

Chapter 85 Section 35 Review

8. Prototype Design Templates

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Handbook Contents

1. Federal

US Army Corps of Engineers General Permit for MA

2. Massachusetts

Wetlands Protection Act Regulations

401 Water Quality Certification Regulations

3. MA River and Stream Crossing Standards

Full compliance for new structures

Maximum extent practicable for replacements

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Regulatory Context

Bankfull Width

1.2 x Bankfull Width

Stream Crossing Standards

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Open Area

Open Area (m2)

Structure Length (m)= Openness Ratio (m)

Openness Ratio (m) > 0.25m for General Standards> 0.50m to 0.75m for Optimum Standards

Stream Crossing Standards

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Preserve existing stream bed (preferred); or if necessary,

Provide for bed material comparable to natural channel and that results in similar depths and velocities at a variety of flows.

Stream Crossing Standards

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Culvert with Stream Simulation

Provide for bed material comparable to natural channel and that results in similar depths and velocities at a variety of flows.

1.2 x Bankfull Width

Stream Crossing Standards

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1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

7. “Design Development” for Municipal Projects

Chapter 85 Section 35 Review

8. Prototype Design Templates

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Handbook Contents

199/20/2018 Adapted from Gubernick, Culvert Summit 2006

Range of Design Approaches

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Range of Design Approaches

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Range of Design Approaches

Lik

ely to

exce

ed

standard

s

Replace

ment, N

ew

Valle

y Span

Stre

am S

pan

Stre

am S

imulatio

n

Culve

rts

Lik

ely to

partially m

eet

standard

s

Replace

ment

Brid

ge R

eplace

ment w

ith

Retain

ed A

butm

ents

Brid

ges

Full-S

pan

Em

bedded

Multip

le B

ox

Culve

rt

Em

bedded C

ulve

rtN

o-S

lope

Culve

rt

Retro

fit,

Replace

ment

Fish

Passage

Hyd

raulic D

esign

No

t likely to

meet

standard

s

Sto

rmw

ater an

d

Flo

od C

onve

yance

Applicatio

ns O

nly

Flo

w C

onve

yance

Brid

ges

Arch

es, B

otto

mle

ss Culve

rts

Lik

ely to

partially m

eet stan

dard

s

Replace

ment

Culve

rts

Replace

ment, N

ew

Lik

ely to

meet stan

dard

s

Valley Span

Stream Span (preserve stream)

Stream Span (simulate stream)

Bridge Replacement – retained abutments

Full Span Embedded Multi-Box Culvert

Embedded Culvert (less than full span)

No-Slope Culvert

Fish Passage Hydraulic Design

Flow Conveyance Design

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

7. “Design Development” for Municipal Projects

Chapter 85 Section 35 Review

8. Prototype Design Templates

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Handbook Contents

• Flood profile impacts

• Other hydrologic constraints

• Potential head-cutting

• Bank stability

• In-stream and wetlands habitat

• Extent of habitat fragmentation

• Engineering design constraints

(e.g. geotechnical, structural)

• Property and infrastructure impacts

• Costs

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Constraints

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

7. “Design Development” for Municipal Projects

Chapter 85 Section 35 Review

8. Prototype Design Templates

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Handbook Contents

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Chapter 85 Review

1. Introduction

2. MA River and Stream Crossing Standards

3. Regulatory Context for MassDOT Stream Crossings

4. Range of Design Approaches

5. Constraints (particularly at replacement crossings)

6. “Design Development” for MassDOT projects

7. “Design Development” for Municipal Projects

Chapter 85 Section 35 Review

8. Prototype Design Templates

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Handbook Contents

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Standard-compliant design examples

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Standard-compliant design examples

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Comprehensive Environmental Inc.

Standard-compliant design examples

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Comprehensive Environmental Inc.

http://www.downeastlakes.org/

Standard-compliant design examples

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Embedded Precast Concrete Pipe

Comprehensive Environmental Inc.

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Standard-compliant design examples

Comprehensive Environmental Inc.

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Comprehensive Environmental Inc.

Standard-compliant design examples

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Precast Concrete Embedded Box Culvert

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Precast Concrete 3-Sided Box Culvert

Comprehensive Environmental Inc.

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Standard-compliant design examples

Comprehensive Environmental Inc.

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www.conteches.com

Standard-compliant design examples

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Precast Concrete Arch

Comprehensive Environmental Inc.

399/20/2018

Standard-compliant design examples

Comprehensive Environmental Inc.

409/20/2018

Standard-compliant design examples

www.bigrbridge.com

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Corrugated Metal Arch

on Stem Walls

429/20/2018

Comprehensive Environmental Inc.

Standard-compliant design examples

439/20/2018

Comprehensive Environmental Inc.

Allan Block Corporation

449/20/2018

Comprehensive Environmental Inc.

Allan Block Corporation

geosynthetica.net

Standard-compliant design examples

459/20/2018

GRS-IBSGeosynthetic Reinforced Soil – Integrated Bridge System

PREFABRICATED CONCRETE BRIDGE DECK

QUESTIONS?

David C. Nyman, P.E.

Comprehensive Environmental Inc.

dnyman@ceiengineers.com