INVESTIGATION OF PINE ROAD BRIDGE

OVER PENNYPACK CREEK

Faculty Advisor: Dr. Ivan Bartoli

Technical Advisors: Dr. Emin Aktan and Ben Cohen

SENIOR DESIGN TEAM: 26

TEAM MEMBERS: MATAN ALEXANDER, CASSANDRA PRUEFER, DEREK ZACCHEO, GARY

REIFF, AND STEVEN KREELEY

OUTLINE

2

• Problem Statement

• Background

• Tasks Performed to Date

• Inspections

• Approaches

• Summary and Conclusions

PROBLEM STATEMENT

3

• Load Reduction caused by

Deterioration

• Emergency Retrofit After

Latest Inspection

• Need for Long-Term Solution

• Consideration of Different

Alternatives

• Recommend Efficient Long

Term Solution

BACKGROUND

Drexel University

Bridge #205

4

•Located in

Pennypack Park

•In Bustleton and

Fox Chase

Neighborhoods

•Built in 1977 to

replace one from

1900

•Last Inspected

6/18/14

• Two Sidewalks

• 44 foot Roadway

Curb to Curb

• 82° skew angle

• Oriented East-West

• Reinforced Concrete

Deck

• 8 Weathering Steel

Girders

5

STRUCTURAL DESCRIPTION

•Single-Span of 80 Feet

between Abutments

•Two Lanes of Traffic

HIGH STRENGTH, LOW ALLOY STEEL

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Wong, c. (2009) Fact or Fiction-weathering steel can provide effective

corrosion protection to steel structures. electrical substation structures

2009: pp1-8.

•Weathering Structural Steel

•Forms a Patina of Rust to Seal the Surface

•Poor Performance under Wet Conditions

•May Require Additional Maintenance

COMMUNITY IMPACT

7

•Evaluated over 5 Mile

Radius

•Connection of

Bustleton and Fox

Chase/Burholme

•Resident, Commerce,

and Emergency Routes

Examined

COMMUNITY IMPACT

8

Bridge #205

Engine 62

Engine 58

Police 7th District

•Schools (Blue)

Prevalent in

Bustleton

•Fire and Police

Stations along

Bustleton Avenue

COMMUNITY IMPACT

9

Bridge #205

•Hospitals, Retail,

and High School in

Fox Chase/

Burholme

•High Density of

Residences

COMMUNITY IMPACT

10

COMMUNITY IMPACT

11

Bridge #205

•SEPTA Routes

could change

from Population

Growth

•Pine Road

could be

Utilized in the

Future

TASKS PERFORMED TO DATE

12

•Panel Meeting with City

•Submission of Preliminary Statement of Interest

•Obtained Most Recent Inspection Reports

•Conducted Bridge Inspection

•Submission of Proposal

DECK INSPECTION

13

•Generally Good

Condition

•Unknown Joint

at East End

•Expansion

Joint in Poor

Condition

•Approach Slab

Shift

•Settlement

SUPERSTRUCTURE INSPECTION

14

•Girders and Cross-braces with

Rusting and Section Loss

EAST SUBSTRUCTURE INSPECTION

15

•Cracking of

Abutment Pedestals

•Emergency Repairs

to East Abutment

•Cracks in Face of

Abutment

WEST SUBSTRUCTURE INSPECTION

16

•Generally Good

Condition

•Cracking in

Abutment Face

•Minimal Water

Damage

Through Joint

GENERAL APPROACH

17

•Decision Matrix

•Geometric and 3-D

Modeling

•Cost Estimates

•Life Cycle Assessment

•Hydraulics and

Hydrology

•Utility Management

•Structural Design

18

19

APPROACH (Modeling)

20

•Google SketchUp

Architectural Model

•3-D Geometric

Model in AutoCAD

•3-D Finite Element

Analysis in SAP

2000

•Determine Worst

Case Scenario

APPROACH (Construction Costs)

21

•Based on PennDOT Unit

Prices

•Determined through

Quantity Calculations

•Factors in Hours Worked

and Maintenance Needs

DESIGN BUDGET

22

APPROACH (Life Cycle Assessment)

23

•2 Similar Bridges

•Performed on all Four Alternatives

•Modeled with SimaPro

•Based on Cost and Quantity of Materials

•Factors in Environmental Impacts

•Considers Possible Population Growth

APPROACH (H & H ANALYSIS)

24

•FEMA Zone AE,

Approximate Analysis

•Determine Peak Flow

Rates Using Existing

Hydrology

•Perform Hydraulic

Analysis on Existing

Conditions

•Compare Changes

APPROACH (STRUCTURAL DESIGN)

25

•Examine Multiple Alternatives

•Rehabilitate Abutments, Beam

End, and End of Deck

•Retrofit with Additional

Drainage

•Replace with Steel or

Prestressed Concrete Girders

•Perform all Relevant Structural

Calculations

APPROACH (UTILITY MANAGEMENT)

26

•8 inch Gas Main

•20 inch Water Main

•Existing Electrical Utilities along

Abutments

PROJECT SCHEDULE (FALL)

27

PROJECT SCHEDULE (WINTER)

28

SUMMARY AND CONCLUSIONS

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•Inspect the Structure to Determine Defects

•Attempt to Ascertain causes of Deterioration

•Examine Multiple Alternatives

•Recommend Most Efficient Solution

QUESTIONS?

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