1. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures West Nursery Road over MD 295 (Baltimore- Washington Parkway) Superstructure Replacement Project utilizing SPMTs

2. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Project Location Baltimore/Washington Metropolitan Area

3. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Project Location

4. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Existing Bridge Elevations Bridge No. 02014 (NB) Bridge No. 02217 (SB)

5. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Existing Bridge Condition Extensive Patches in Bridge Deck Sidewalk and Deck Deterioration

6. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Existing Bridge Condition Cracking in Underside of Bridge Deck

7. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Design Parameters / Site Conditions Superstructure Replacement Long Term Detour Not Allowed 2 of 4 lanes must be maintained on West Nursery Rd. Large median existed between MD 295 NB and SB lanes (79’, 87’ including shoulders) Vertical underclearance extremely low (15’-9”)

8. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Decision Analysis Musts 2 of 4 lanes maintained at all times Able to carry HL-93 live loads Maintain existing vertical under clearance (15’-9”)

9. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures 8 Alternatives were Initially Evaluated Deck Replacement / Superstructure Replacement / Complete Replacement Widening / No Widening Single Stage / Two Stage Construction Sequence

10. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Decision Analysis Matrix

11. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Selected Initial Alternative: Total Superstructure Replacement Matching Existing Bridge Geometry One phase construction utilizing temporary bridge 12 month estimated duration of construction Reduces lane capacity by 50% for duration of project Requires construction of temporary roadway, reconfiguration of ramps Requires right of way

12. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Proposed Typical Section

13. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Satellite View of Location

14. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Bridge Pilaster

15. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Rehabilitation Cost Comparison Temporary Bridge Estimated cost of temporary bridge = $800,000Estimated cost of temporary bridge = $800,000 Reconfigure rampsReconfigure ramps Temporary approach roadwayTemporary approach roadway Right-of-wayRight-of-way Demo over trafficDemo over traffic Reduced Traffic lanesReduced Traffic lanes Total cost = $800,000+++ SPMTs Bid Prices SPMTs = $450,000SPMTs = $450,000 Grade Median = $5,700Grade Median = $5,700 Rebuild Shoulders = $120,000Rebuild Shoulders = $120,000 Temporary Towers = $290,000Temporary Towers = $290,000 Total Cost = $865,700

16. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Road User Costs Total cost of reducing West Nursery Road from 4 lanes to 2 lanes = $2000 per day Reduced lanes for approximately 7 of 12 months = 7 x 30 x $2000 = $420,000

17. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Public Outreach Mass mailing of project brochure Public outreach meeting Community liaison met individually with major businesses in corridor Presented at BWI business partnership

18. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures MD 295 Detour Plan

19. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures West Nursery Road Detour Plan

20. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures B r i d g e S t a g i n g A r e a Sequence of Construction

21. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Design Process Details →Design, Bid, Build Process →Bridge moving company had to be one that was preapproved →Extensive coordination with moving company throughout the design process and with Utah DOT →Moves will take place on two consecutive weekends →Roadway Rentals

22. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Roadway Rentals A traffic study was performed and determined that the following closure time for West Nursry Road and detour of MD 295 were acceptable: MD 295 Friday 11 pm to Saturday 6 am Saturday 11 pm to Sunday 8 am West Nursery Road Friday 10 pm to Sunday 8 am

23. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Roadway Rentals During Designated Period Roadway Rentals Outside Designated Period

24. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Established Bid Item

25. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Example During weekend no. 1 when moving the existing bridge over MD 295 SB into the median, MD 295 SB is opened at 9 AM Saturday instead of 6 AM. All other time constraints in weekend no. 1 are met. During weekend no. 2 when moving the new bridge over MD 295 NB into place, West Nursery Road is opened at 6 am Sunday instead of 8 am. All other time constaints in weekend no. 2 are met.

26. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Example

27. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Current Status

28. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Current Status

29. Maryland State Highway Administration Office of Structures Maryland State Highway Administration Office of Structures Current Status See live construction on the web: http://www.roads.maryland.gov →Projects and studies →SHA Projects Page →Anne Arundel County →West Nursery Road