Construction
M-14 at Gotfredson Road
Salem Township, Washtenaw County, Michigan
Design of the Gotfredson Road approaches, ramp terminal upgrades and maintenance of traffic in conjunction with the rehabilitation of the Gotfredson Road bridge over M-14. The bridge scope included deck replacement, pin and hanger replacement, painting and substructure repair. MDOT personnel completed the bridge design.
The existing road was two lanes, one in each direction. HH Engineering Ltd�s scope called for road design and preparation of ROW plans for widening the approaches and upgrading the ramp terminals to facilitate anticipated traffic that would be generated by the construction of a new Johnson Control�s facility in the vicinity of the interchange. Work also included maintaining traffic design necessary to complete the bridge construction including detour plans for the closure of M-14 for bridge deck removal and the design of a temporary signal to maintain traffic across the bridge during construction.
Pending
I-75, from I-375 to M-8/Davison Freeway � Bridge Approach Design & Maintaining Traffic
Detroit / Hamtramck, MI
In conjunction with the rehabilitation of 21 structures over I-75, from I-375 to M-8 (Davison Freeway) in the Cities of Detroit and Hamtramck, Wayne County, HH Engineering Ltd. was retained by the Michigan Department of Transportation to design and prepare construction documents for the approach work and maintenance of traffic.
HH Engineering Ltd. project responsibilities included surveying for the approach work, preparation of approach plans, maintenance of traffic and detour plans, preparation of permanent pavement marking plans, traffic signal design, sidewalk and ADA ramp upgrades, special provisions and calculations of pay quantities and estimates.
The existing structures over I-75 were 1, 2, 3 or 4 span steel structures, ranging from 2 lanes to 10 lanes wide. Several of the structures also included U-Turn lanes. The span lengths ranged from 27� to 106�.
The scope for each structure varied from complete deck replacement with minor widening to epoxy overlay of the existing deck. Work also included, substructure repair, pier reconstruction on three structures, joint replacement, painting, pedestrian fencing and approach work.
The approach work included the removal of the existing composite pavement and concrete reconstruction of the approaches. The existing concrete curb and sidewalks adjacent to the approach slabs were also reconstructed and ADA ramps were installed along with fencing in many locations.
This project was split into two segments for ease of construction and to minimize the disruption to the motoring public. Segment 1 was I-75, from I-375 north to I-94 (twelve structures) and Segment 2 was I-75, from I-94 north to M-8 (Davison Freeway) (nine structures).
Maintenance of traffic plans were prepared for both above and below the structures. The local traffic above was maintained by closing the structures and detouring traffic. Maintaining traffic requirements dictated that one lane of traffic in each direction be maintained at all times on I-75, except when removing the existing decks. The deck removals were completed by full closure and detour of I-75. Single lane and shoulder closures were utilized to complete the substructure repairs and pier reconstructions. Partial closures of I-75 were used at night to paint the structures. Eight structures were located in interchanges or were ramps entering or exiting the freeway. This necessitated the closure of several ramps and turning roads for short durations. For those ramps and turning roads that needed to be closed, detour plans were provided.
US-12 Passing Relief Lane, Schill Road to Feldkamp Road
Saline Township, Michigan
HH Engineering Ltd. is currently under contract with the Michigan Department of Transportation to design and prepare construction documents for the widening of US-12 from Braun Road to Schill Road, to provide both eastbound and westbound passing relief lanes on the US-12 corridor between the Cities of Saline and Clinton. The existing roadway is two lanes with narrow flush shoulders and minimal ditching. The new roadway is four lanes with 10� shoulders (9� paved) and improved drainage. The total project length is 1.65 miles.
Because Build Michigan III funds are being used for the project, there is a 4 million dollar for the project. Due to the increase in the width of the roadway section and proposed geometric improvements, impact to the adjacent properties was becoming a concern. In addition, initial ROW acquisition estimates were substantial. In order to come up with a solution that would balance the road widening with the ROW acquisitions, HH Engineering Ltd. personnel worked closely with Real Estate agents from University Region to reach a balanced solution. A combination of a deep ditch section in the more rural areas and curb and gutter with enclosed drainage in the developed areas proved to be the most economical. Project responsibilities also included all survey work for the project; preparation of right-of-way plans to facilitate Michigan Department of Transportation�s right-of-way acquisition, guardrail design, superelevation crown correction, maintenance of traffic plans, preparation of permanent signing and pavement marking plans.
Realignment of M-49 over Sand Creek
Litchfield Township, Michigan
HH Engineering Ltd. was retained by the Michigan Department of Transportation to design and prepare construction documents for the realignment of M-49 in Hillsdale County. The total project length was 0.704 kilometers (0.44 miles). The existing roadway was two lanes with flush shoulders and made a sharp 90 degree turn where the direction of M-49 changed from due east to north. In addition, two Hillsdale County roads (Anderson Road and Genesee Road) tied into M-49 at the 90 degree turn. To eliminate the hazardous curve and improve the intersection configuration, a 350 meter radius curve with spiral transitions was installed to realign M-49 through an existing farm. In addition, both county roads were also realigned. Genesee Road was tied directly into Anderson Road and Anderson Road into realigned M-49, thus eliminating multiple access points onto M-49. The new M-49 roadway is two lanes with flush shoulders and meets a 100 kilometer per hour (60 mph) design speed.
To further complicate the project, Sand Creek crossed under M-49 in the vicinity, therefore realignment of the creek was required. This necessitated hydraulic analysis of Sand Creek and construction of two new �Conspan� three-sided concrete culverts. One of the structures is 11 meters (36�) wide by 17,605 meters (58�) long and carries M-49 over Sand Creek. The other structure has an 11 meter (36�) span and is 15.64 meters (51�) long carrying Genesee Road over Sand Creek.
To ensure the new structures would not increase the backwater and adversely affect properties upstream, a HEC 2 analysis of Sand Creek was required. HH Engineering Ltd. performed the HEC 2 analysis and prepared the hydraulic report for submittal to Michigan Department of Transportation.
Project responsibilities also included preparation of right-of-way plans to facilitate Michigan Department of Transportation�s ROW acquisition for the realigned roadway, preparation of wetland mitigation plans, guardrail design and layout, maintenance of traffic and detour plans, preparation of permanent signing and pavement marking plans, special provisions and calculations of pay quantities and estimates.
Widening of US-12, Austin Road to the Saline River
Saline, Michigan
HH Engineering Ltd. was retained by the Michigan Department of Transportation to design and prepare construction documents for the widening of US-12 from west of Austin Road to the Saline River. The total project length was 1.4 kilometers (0.89 miles). The existing roadway varied from two to three lanes with intermittent curb and gutter. The new roadway is a curb and gutter section with five lanes at Austin Road, narrowing to a three lane section east of Austin Road to the Saline River. As part of the project a new storm sewer system was designed to replace the existing undersized and outdated system. The new storm line varied in size from 300 mm (12�) to the 1200 mm (48�) outlet into the Saline River.
Because this section of US-12 is within a historical and highly developed area of the City of Saline, sensitive urban design methods had to be implemented to minimize the impacts of the road widening on the adjacent housing and commercial development. To complicate the design even further, it was discovered that a mill race existed under US-12, which carried the overflow from Saline Lake on the north side of US-12 to the Saline River on the south side of US-12. The mill race also ran under and was tied into the foundation of a historical building located on the south side of US-12, which was a former mill constructed by Henry Ford in the late 1800�s. The design included the use of special construction techniques to insure the millrace and historical structures were adequately protected.
Project responsibilities also included surveying, preparation of right of way plans to facilitate Michigan Department of Transportation right-of-way acquisition, joint repair and resurfacing, guardrail design and layout, superelevation crown correction, maintenance of traffic and temporary signal plans, preparation of permanent signing and pavement marking plans, special provisions and calculations of pay quantities and estimates.