1. Q: Should the as-authorized Task 6 be included in the consultant cost proposals?

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1 1. Q: Should the as-authorized Task 6 be included in the consultant cost proposals? A: No, this will be added by amendment so don't include Task 6 in your cost proposals. The other as-authorized task of Phase 2 load ratings, however, should be included in the costs proposals. See RFP Addendum #2 for additional clarifications on cost proposal requirements. 2. Section 2.3 of the scope says to load rate all pier caps. Is this intended? A: Yes, all pier caps must be rated. 3. Q: Is Task 6 expected to be completed by November 2019? A: Yes, but we re not ruling out a possibility of a contract extension depending on where Task 6 takes us. 4. Q: What is WISDOT's role going to be on this project? A: They will be an active partner, reviewing deliverables and providing input. 5. Q: What is meant by stakeholder coordination? A: Our intent is for the selected consultant to know that it will have to coordinate things for traffic control and access, and be communicating with those types of stakeholders. 6. Q: Do we have an updated ADT for trucks? A: Not just yet. Nick Haltvick will look into this to try and get a better number. 7. Q: When will the latest fracture critical inspection report be done? A: No status on report just yet, but it will be made available when done. Next year's inspection is the routine. 8. Q: Are there aspects of the upcoming District 1 scoping contract that this consultant may need to do? A: Other than supplying the information required through this contract, we don t anticipate much overlap into the District s scoping contract. The District hasn t started its scoping contract yet. IF collaboration becomes necessary, this contract may be extended beyond November 2019 to accommodate that need, but that is not known at this time.

2 9. Q: Are there any DBE goals for this contract? A: No. We encourage DBE participation, but there isn t a numeric goal for this contract. 10. Q: (Task 4.4), Does MnDOT want pictures from the drone from above and below the deck? A: Yes. UPDATED 9/25/ Q: (Task 4.4), How many pictures does MnDOT want of the deck? One per span, 4 per span, 10 per span? 12. Q: (Task 4.4), How close should the drone be when the pictures are taken? 13. Q: (Task 4.4), For the interactive computer application, what system should it be based in, PC or Mac? A: PC. 14. Q: (Task 4.4), Are the system and photos to be stored locally on a hard drive, on a server, in the cloud, or some other storage system? 15. Q: (Task 4.4), Is this system to be run locally on a computer or web-based? 16. Q: (Task 4.4), Is MnDOT storing the photos and hosting the interactive computer application or the Contractor? A: Contractor will initially store photos and the interactive program will be a deliverable to MnDOT upon completion of the task. 17. Q: (Task 4.4), If the Contractor is providing the computer system, please provide the minimum specifications for the hardware.

3 18. Q: (Task 4.4), If MnDOT is storing the photos, will MnDOT provide the hardware to store the photos and access the application? If so, please define the specifications for the hardware provided by MnDOT. 19. Q: (Task 4.4), What standards for geotagging the photos should be used to define the location of the photos i.e. how close to actual location? 20. Q: (Task 4.4), Does geotagging need to include X,Y, and Z coordinates or X and Y? Are coordinates needed at all? 21. Q: (Task 4.4), Does MnDOT currently use a specific interactive computer application that they would like the Contractor to use for this project? A: No. 22. Q: (Task 4.4), Should the application have the ability to zoom in and out? A: Yes. 23. Q: (Task 4.4), Should the application have the ability to upload new photos and download existing photos? A: Yes. 24. Q: (Task 4.4), Should the application have the ability to print? A: Yes. 25. Q: (Task 4.4), If the proposed application requires a fee to activate and an annual fee to continue to access, will MnDOT pay for these fees? 26. Q: (Task 4.4), If stored in the cloud, will MnDOT pay for the storage costs in perpetuity?

4 A: No. 27. Q: (Task 4.4), Does MnDOT want a database for the photos with the geometric location of each photo shown or a 3D system with a photo-realistic representation of the bridge that the user could click a bridge location and get photos from near that location? Please define further the requirements for storing and accessing the photos. 28. Q: (Task 4.4), Does MnDOT have any geotagging information for the 600 existing photos to be cataloged? If so, please provide a description of this information. 29. Q: (Task 4.4), Where are the 600 existing photos currently stored? A: On the MnDOT Bridge Office server. 30. Q: (Task 4.4), How will the 600 existing photos be transmitted to the Contractor? A: Either through a MnDOT Workspace forum or FTP site. 31. Q: (Task 4.4), What format are the 600 photos currently stored in? Do they need to be converted to another format? A: JPG image. No perceived need to convert to another format, TBD in collaboration with State at a later date. 32. Q: (Task 4.4), How will MnDOT use these photos of the bridge deck in the future? A: For detailed photo documentation of the existing condition of the bridge deck, as a tool for use with consideration of future deck rehabilitation alternatives. 33. Q: (Supplemental Inspection), For the supplemental inspection and material sampling, can the Contractor use MnDOT s snooper vehicle? A: No. The scope of work states that Contractor will supply its own inspection vehicles.

5 34. Q: (Vessel Impact Study), Is the Vessel Impact Study simply applying the loads in AASHTO for vessel impacts to check the pier capacities or does it include an assessment of the piers and recommending potential pier protection measures? A: This includes an assessment of piers based on a study of the vessel traffic through both portals. We would only ask for potential pier protection measures in Task 6 (as-authorized). 35. Q: (Tasks 3.2 and 3.3), Does MnDOT want any wind tunnel testing for the Wind-Induced Vibration and Aeroelastic Instability Studies? A: We do not believe this is necessary at this time, although that must be determined by the selected consultant. 36. Q: Task 4.1 states a full chain drag survey was completed in Can this survey be provided? A: The chain drag survey will be provided upon contract notice to proceed. 37. Q: (Task 4.1), Does the delamination survey stated in Task 4.1 require the Contractor to compile the results of the 2011 chain drag survey and the 2017 infrared camera results into one survey? A: No. The infrared camera results were not comprehensive. 38. Q: (Task 4.1), Does the delamination survey stated in Task 4.1 require the Contractor to complete a chain drag survey of the entire deck? Does MnDOT want some other type of delamination survey? A: The entire deck needs to be chain dragged. If there are other methods for collecting this data, MnDOT would be open to conversation on these. 39. Q: (Task 4.2), In #2 for Task 4.2, does MnDOT want 6 total cores for the whole bridge or 6 cores for each of the piers listed in Task 2.3, Phase I (Pier 3, two representative piers from Piers 4-14 and 19-43, Pier 16 and 17, and one representative pier from Piers 44-51)? A: Six cores for each pier, with the exception of Piers 16 and 17 (clarified in the companion PowerPoint presentation from the informational meeting). 40. Q: (Task 4.2), Will MnDOT expose the footings on these piers to take cores of the footing or does the Contractor need to excavate the piers to the footing elevation? A: Contractor must supply its own inspection vehicles, so Contractor will also need to provide excavation services as well as services to return the site to its original condition.

6 41. Q: Is MnDOT requiring concrete cores to be taken underwater at the footings for Piers 16 and 17? A: No. See response to Question # Q: For the delamination survey of the existing piers, does MnDOT only want the visible delamination recorded or a more extensive survey indicating delamination below the concrete surface? A: It is envisioned that the piers will be sounded to identify the majority of the delamination, not just areas that are visible. 43. Q: For Task 6, it states State desires to explore extending the service life of all bridge elements, except for the truss spans. Does this mean the work specified in Task 6 will not include the truss spans? A: Correct. 44. Q: Task 6 indicates it will be an as-authorized task. Does this mean Task 6 should not be included in the Cost Proposal? If included in the Cost Proposal, will it be included in the scoring evaluation? A: Task 6 should not be included in costs proposals; however, Task 6 must be included in the Contractor s work plan and schedule. See RFP Addendum #2 for additional clarifications on cost proposal requirements. 45. Q: For Task 6, how long does MnDOT want to extend the service life of all of the bridge elements? Is there only one time period to be analyzed or multiple time periods? If multiple, what are they? A: the extension of life will be based on the findings from the other tasks. There may be multiple time periods, but this in unknown at this time; as such, this will be an as-authorized task. UPDATED 10/2/ Q: (Task 2): Are both As-built and As-inspected ratings required or only As-inspected? A: Provide both as-built and as-inspected load ratings for only the Phase I Load Rating task. This will allow State and WisDOT to interpret the data with completion of this task prior to authorizing the Phase II Load Rating task that will required only the as inspected load ratings. NOTE: As-inspected in intended to be defined by existing bridge inspection data and the supplemental inspection data gathered by the consultant through this contract. As-inspected is NOT intended to mean an independent fracture critical or routine inspection of this bridge.

7 47. Q: (Task 4.4): For the photographs of the bridge deck taken by the drone as requested in Task 4.4, the FAA will likely require the roadway to be closed while the drone is flying and taking photos. Will MnDOT provide traffic control to close the bridge in both directions if this is required by the FAA? A: MnDOT s understanding is that the FAA would not require closure while operating below the deck to take photos and the top of deck photos do not need to be taken with the use of a drone. Therefore, MnDOT would not provide traffic control to close both directions, nor would we allow a closure in both directions. MnDOT anticipates that the lane closures required for the routine inspection will suffice for traffic control needs. 48. Q: (RFP), Are resumes to be included in the 15-page limit? A: Yes. 49. Q: (RFP), Will 11 x17 pages be allowed and if so, will it count as two 8.5 x11 pages? A: An 11 x17 page may be used only for the project schedule. No other proposal narrative or information may be included on the 11 x17 page. The use of an 11 x17 page for the project schedule will count as one page toward the total page limit. See RFP Addendum # Q: (RFP), Can we bring 1 more person to the interview? A: Responders may include up to four project team members on its interview team. See RFP Addendum # Q: RFP notes for costs Identification of any cost information related to additional services or tasks. This should be included in the cost proposal, but clearly identify it as additional costs and not made part of the total project cost. But, it also notes not to include costs in the technical proposal. Is it OK to explain the additional services or tasks in the technical proposal, note them as not being part of the base cost but not actually give any cost information? A: Additional services or tasks must be identified and described as such in the technical proposal. Corresponding costs for proposed additional services or tasks must also be included in the cost proposal. They must be clearly separated from the baseline cost proposal. 52. The scope of work has several to be authorized tasks. Does MnDOT want these reported in the cost as additional tasks or part of the baseline cost?

8 A: Tasks noted as authorized must be included in the baseline cost proposal. Task 6 is the only as-authorized task that does not need to be included in the cost proposal, not in the baseline cost or as an additional task/service. Task 6 is intended to be addressed via contract amendment at a later date. 53. Q: Does MnDOT want a full sounding of the deck (i.e. chain drag) for the deck delamination survey or would they accept thermal imagery again? A: See Question Q: Will the bridge be fully closed for the July 2018 inspection or will this be done under lane closures? A: The inspection will be done under lane closures. 55. Q: Can we perform inspections from the deck other than the July 2018 Inspection Period? A: The intent is to make use of the traffic lane closures that will occur during the July 2018 routine inspection period. There would be another 3-week opportunity in July 2019 during the fracture critical inspection, but that is likely too late in the project since a November 2019 completion is anticipated. 56. Q: Is the July 2018 Inspection period a full closure? Will other lane-closure periods be available for inspection: A: The July 2018 inspection includes lane closures for placement of a snooper in one lane in one direction, with the adjacent lane open to traffic. The opposite direction will have both lanes open to traffic. These closures will occur Monday Thursday between the hours of 9:00 am 3: pm. This is planned for a three-week period with the possibility of extending to a fourth week as make-up for weather or other unanticipated delays. No other lane closure periods are currently planned to be available for inspection services. 57. Q: (Task c): What available data are we expected to use to assess the condition of the bottom side of the deck? A: MnDOT will provide traffic control during the July 2018 inspection period, and MnDOT has called for the selected consultant to provide its own snooper(s) for inspection to access the bridge, including the underside of the deck. Due to weight restrictions only one snooper is allowed to be on any one of the three main truss spans at a given time.

9 The selected consultant is expected to collect data from the inspection for further evaluation of the remaining life of the deck. MnDOT expects that samples taken to identify chloride profiles will be required along with other creative means, as proposed by the selected consultant, to collect data needed for assessment of the deck with respect to the corrosion threshold for use in assessment of the remaining service life of the deck. At a minimum, bridge element inspection data should be used. Other indicators of deterioration (i.e. photos, delamination survey using a spur tool, etc ) can be proposed by consultants to provide the best indication of the full depth of deterioration. 58. Q: (Task a), Are you looking for spot readings or for a specific area? A: Consultant teams must plan according to the limitations outlined in the previous question and provide a plan to assess the condition of the deck. MnDOT expects that the number of samples, sample sizes, and any spot readings will be based on the study of available data, including forthcoming results from additional inspections that have occurred in 2017, which are not currently available. 59. Q: (Task c): What method of testing is requested for electrical continuity testing? A: The results of electrical continuity testing will be used to develop deterioration curves and life expectancy of the bridge deck. The selected consultant must select a method that provides the appropriate level of results to provide an accurate estimate of life expectancy. 60. Q: (Task a): What kind of samples are requested? A: At a minimum, grout samples should be of sufficient volume to permit subsequent acid soluble chloride testing. 61. Q: (Task b): Do you mean chloride acid soluble testing is requested? A: Section b should read, Contractor will provide acid soluble chloride testing on the pier caps. Contractor may 62. Q: (Task c.ii): What means to identify the tendon profile is requested? What are the ducts made of?

10 A: MnDOT expects that plans and shop drawings would be the primary indicators, along with other means and methods proposed by the selected consultant. Check the bridge plans for identification of duct properties. 63. Q: (Task c.iii): What means to identify voids is requested? A: Means and methods to identify voids include visual inspection during sampling along with any other means and methods that may be reliable and available based on expert input from the selected consultant. 64. Q: (Task d.i): What test method for oxygen content is requested? A: UPDATED 10/4/17: The goal is to capture factors that may influence corrosion of the piling. The selected consultant must select a method that will allow for the use of this information to provide insight on the anticipated life of the piles AND the likelihood that active corrosion is an issue. 65. Q: (Task d.iv): What method of measuring specific conductance is requested? A: UPDATED 10/4/17: See Question Q: (Task d): What methods of measuring bacteria is requested? A: UPDATED 10/4/17: See Question Q: Task 4.3 requests that piling will be sampled for microbial influenced corrosion if significant corrosion is observed. Should these tests be included in the Cost Proposal? If so, how many tests should be assumed? A: Include in the baseline cost proposal and assume two tests per test pit.