WBCM had a significant role in the State of Maryland’s Intercounty Connector (ICC) project. The new east-west highway covers approximately 18.8 miles and links existing and proposed development between the I-270 and I-95/US 1 corridors within central and eastern Montgomery County and northwestern Prince George’s County. The ICC is a state-of-the-art, toll operated, multi-modal roadway with limited points of access. WBCM was responsible for the design of the US 29 interchange, which included the I-95 and US 29 interchanges and connecting roadways, mainline MD 200 from east of Virginia Manor Road to US 1, the reconstruction of US 1 to a four-lane divided highway from Muirkirk Road to approximately 2,000 feet north of MD 200, and the design of Maryland’s second Continuous Flow Intersection (CFI) at the terminus of MD 200 at US 1.

WBCM provided the lead traffic engineer for all contracts. WBCM staff developed traffic signal, signal interconnect, signing, and pavement marking and maintenance of traffic  (MOT) plans, as well as signalized corridor and freeway interchange traffic models using SYNCHRO and CORISM to identify mobility issues during construction and for the final geometry. Plans were also prepared to maintain signalized control, signal systems, and lighting during the various MOT stages. Critical lane volume and queuing analyses at existing and proposed signalized intersections were conducted to determine appropriate lane assignments and storage lane lengths. Crash data, traffic data, signal timing, geometrics, field conditions, and construction sequencing were analyzed in the development of the project-wide Transportation Management Plan (TMP). WBCM conducted monthly task force meetings and MOT pre-phase-switch meetings and coordinated closely with the ICC traffic team as well as other disciplines, including roadway, structures, environmental, drainage, erosion and sediment control. WBCM also conducted public outreach and worked closely with local agencies, including the Montgomery County Department of Transportation and the Prince George’s County Department of Public Works and Transportation.