CN-550000-CAT93-00050000.pdf

STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION

TASK WORK ORDER FOR PROFESSIONAL SERVICES

375-030-25

PROCUREMENT

08/21

Consultant:

Address:

Date:

7/30/2029

*Limiting or Estimating/Budgeted Amount.

Distribution:

Consultant Acceptance:

Signature

Structures Transportation Business Center Practice Leader

$37,600.78

$0.00

(name) (title)

Mohit Soni

$37,600.78

Total authorizations to date (including this one):

Departmental Approval:

$37,600.78

Perform geo-structural Phase 3 Stability Analysis for Bridges 720205, I-10 WB over McGirts Creek, and 720275, I-10 EB over McGirts Creek, in Duval County.

Stantec Consulting Services, Inc.

4651 Salisbury Road, Suite 350 Jacksonville, FL 32256

(To be entered upon execution of T.W.O.)

Brief Task Description:

In accordance with the above referenced contract, you are authorized to perform the tasks detailed in attached Exhibit A (Scope of Services).

Compensation elements are as follows:

Element Description Amount Estimate/LimitMethod of Compensation

The total amount or the limiting amount of the compensation will be:

All services required under this Task Work Order will be completed on or before:

$37,600.78

(LA4) Units worked at loaded billing rates in Table 6

Page 1 Total

Page 2 thru 6 Subtotal

Total

Salary Related Costs (LA-4)

$107,277.73

(name) (title) Signature

Ross Hammock D.S.M.E.

Other Notes:

An independent assessment of the staff hours and quantities for the proposed services has been performed, and found to be fair, reasonable, and competitive.

Task Work Order No.:

Contract No.: Payment FM No.:

CAT93 214353-2-72-25

A-1

Contract No. CAT93

Task Order No. 3

EXHIBIT “A”

SCOPE OF SERVICES

Stantec Consulting Services Inc., hereafter called the CONSULTANT, was retained by the FLORIDA

DEPARTMENT OF TRANSPORTATION, hereafter called the DEPARTMENT or FDOT, to prepare bridge repair

/rehabilitation study within District 2 in Florida.

I. PURPOSE:

This Task provides for the CONSULTANT to perform geo-structural Phase 3 Stability Analysis for

Bridges 720205, I-10 WB over McGirts Creek, and 720275, I-10 EB over McGirts Creek, in Duval County as specified below in Exhibit A-1

II. SERVICES TO BE PROVIDED BY THE CONSULTANT:

Please see Exhibit A-1

III. DEPARTMENT RESPONSIBILITIES:

Providing existing available data/information and Geotechnical services needed for this project.

IV. AUTHORIZATION OF SERVICES:

Services to be provided by the CONSULTANT will be initiated and completed as directed by the

DEPARTMENT.

V. SUMMARY OF FEES:

For a summary of contract fees, see exhibit “B” attached hereto and made a part hereof. The amount of hours shown in Exhibit “B” for this work is estimated only and may increase or decrease based on actual project requirements.

VI. DETAILS OF ADDED SERVICES AND FEES

Details of the added services and fees are attached as Exhibit “B”.

D2 Districtwide Minor Design 1 9/24/2024

EXHIBIT “A-1”

SCOPE OF SERVICES

TASK WORK ORDER NO. 3

Districtwide Minor Design

Bridge Nos. 720205 and 720275

I-10 WB and EB over McGirts Creek in Duval County

1.0 DESCRIPTION

Consultant shall perform geo-structural Phase 3 Stability Analysis for Bridges

720205, I-10 WB over McGirts Creek, and 720275, I-10 EB over McGirts Creek, in

Duval County.

The Consultant’s evaluation shall conform to the following guidelines, codes, standards, and specifications: AASHTO LRFD or LFD Bridge Design Specifications, as appropriate for the bridge design year, FDOT Structures Design Guidelines (latest edition), FDOT Standard Specification for Roadway and Bridge Construction (latest edition), and FDOT memorandums regarding scour evaluation.

2.0 OBJECTIVES

The bridges have been classified as scour critical, but rubble riprap was installed in a recent project EDMS #1271393 that necessitates a Phase 3 evaluation for both bridges. Phase 3 evaluation methodology has also developed since the previous

Phase 3 evaluations were conducted.

• Review available project information, including plans, pile driving records, previous scour analysis reports, and inspection reports.

• Compute structure loads, accounting for any skew.

• Coordinate with geotechnical engineer to obtain geotechnical FBMultiPier parameters Perform Stability Analysis for the worst case bent to determine stability and a scour critical elevation, if applicable.

• Provide revised Phase 3 reports with conclusions and recommendations.

3.0 SERVICES

The following services will be performed to achieve the objectives:

1. Review project documents; plans, inspection reports, and existing geotechnical data.

2. Coordinate with geotechnical engineer to obtain geotechnical FBMultiPier parameters Perform Stability Analysis for the worst case bent for each bridge to determine stability and a scour critical elevation, if applicable.

D2 Districtwide Minor Design 2 10/15/2024

3. Preform stability analysis under live load and lateral stream forces using Modified Load Group I per FDOT memorandums. The lateral stability analysis will be conducted typically using The FB-MultiPier Program. A factor of safety (or resistance factor if working in LRFD) of 1.0 should be applied to the soil parameters. The analysis will be conducted for the worst case bent at the 100-year scoured mudline. If the bridge is found to be unstable at the 100-year scour, a scour critical elevation will be determined in this task. Scour elevation will be referenced to a fixed point such as distance from top of rail or similar. The stability analysis will consider the geotechnical parameters for scoured mudlines through the 100-year scour, as well as analyzing potential scour depth and extent with consideration of the foundation material's resistance to scour

4. Submit revised Phase 3 reports to the Department, with conclusions and recommendation for considering each bridge either scour critical or low risk/ scour countermeasures installed.

4.0 DEPARTMENT RESPONSIBILITIES

FDOT will provide the following materials and services to support the completion of the above scope of work:

a. Provide all available information: existing plans, as-built plans and pile driving records, bridge inspection reports, geotechnical reports, benchmarks etc.

5.0 BEGINNING AND LENGTH OF SERVICES

The above services shall begin upon receipt of the task work order authorization and as directed by the Department’s Program Manager. The work shall end when the summary of findings and recommendation are provided to the Department. It is anticipated that Phase 3 reports will take 3 weeks after the receipt of Geotech report from FDOT to complete, exclusive of FDOT reviews.

6.0 ESTIMATE OF SERVICES

For details of the estimated costs to perform the required services, see Attachment “B”.