August 2022 MD 32 complete providing four-lane divided highway, with two lanes each direction
August 2022 Middle Patuxent Bridge
August 2022 Middle Patuxent Bridge
August 2022 MD 32 complete
August 2022 Tridelphia Rd Bridge
August 2022 Tridelphia Rd Bridge
August 2022 Additional travel lanes were added along the six-mile stretch of MD 32
July 2022 Two additional travel lanes have been added to MD 32
July 2022 Middle Patuxent Bridge
January 2022 Middle Patuxent Bridge
January 2022 Middle Patuxent Bridge
September 2021 NB substructure work
September 2021 Middle Patuxent stream relocation
September 2021 Middle Patuxent stream relocation at S6 SB
May 2021 Triadelphia Road Bridge S4
May 2021 Structure of S6 and relocation of MPR
May 2021 Cut to fill operations in the SB lanes
March 2021 S7 Roadway Approach
March 2021 Setting Stage 2 Box Culvert
March 2021 Setting the Box Culvert
February 2021 Rosemary Stream Restoration landscape staging
February 2021 Precast Box Culvert Excavation
November 2020 S7 Backfill
September 2020 S6 Substructure
September 2020 Stream Channel Riffle Grade Control
September 2020 Aerial view of project
September 2020 New Access Rd
September 2020 New Access Rd
August 2020 Box culvert backfill
August 2020 Box culvert
August 2020 Box culvert
August 2020 Stage 2 Pier footer
August 2020 Beam erection
August 2020 Deck preparation
June 2020 Stage 2 girders looking west
June 2020 Southbound bridge Abutment B footer
June 2020 Southbound Abutment B footer
June 2020 Northbound superstructure
June 2020 Stage 2 support of excavation
March 2020 S4 Abutment A
March 2020 S3 Box Culvert Foundation
March 2020 S8 Precast Box Culvert
March 2020 S6 Middle Patuxent Bridge Abutment A
March 2020 S4 Triadelphia Bridge Abutment A
February 2020 S1 Box Culvert Footer
January 2020 S3 Box culvert support of excavation
January 2020 S1 Stream Diversion
December 2019 S6 Bridge Drilled Shafts
December 2019 S6 Bridge Drilled Shafts
November 2019 S3 box culvert support of excavation
November 2019
August 2019
June 2019
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Location
Howard County, MD
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Duration
June 2019 - Summer 2022
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Owner
Maryland State Highway Administration
This $85M design-build project, awarded by the Maryland State Highway Administration, included construction of a four-lane divided highway for six miles, with two lanes in each direction. It also involved replacing three existing bridge structures and box and pipe culverts, paving of new roadways, rehabilitation to existing roadways, new traffic signage, utility relocations and stormwater management (SWM).
Construction on the project began in June 2019 and was complete summer 2022.
Key Challenges & Project Details
- Project included 4,500 SF of stream relocation of multiple tributaries to the Middle Patuxent River, including the relocation of the river itself.
- In-stream work was restricted from March 1 – May 31 due to stocked trout in the Middle Patuxent River.
- A one-mile, permanent access road was built parallel to MD 32 for relocated utilities and to provide safer access for properties previously having a direct access driveway.
- SWM included over 10 miles of roadside grass and bioswale facilities along with 15 SWM ponds.
- Scheduling and coordination to minimized impacts to traveling public and Howard County school.
- The project team reduced forest clearing from 116 acres to 74 acres.
Project Fun Facts
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The original MD 32 was constructed in phases during the 1950's and 1960's.
Project Recognition
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2023 - Award of Merit, Infrastructure - DBIA-Mid Atlantic
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2023 - Excellence in Construction, Transportation Greater than $15M - Construction Management Association of America (CMAA) - Baltimore
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2023 - National Recognition Award, Engineering Excellence - American Council of Engineering Companies (ACEC)
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2023 - Partnering, Project Over $10 Million - Maryland Quality Initiative (MdQI)
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2022 - Excellence in Paving - Maryland Asphalt Association