Company:
Orange County Transportation Authority (OCTA)
Status:
Awarded
Awarded:
Transportation Project of the Year
Additional Files


Additional Information

The project demonstrated the collaborative teamwork of senior leadership within OCTA and Caltrans to come together and resolve a challenging issue – with a net result of no substantial change in the project delivery schedule.

SR-91 Westbound Widening

Project Location:

SR-91 between SR-57 and I-5 within the Cities of Anaheim and Fullerton.

Project Description:

As prime consultant to OCTA, Michael Baker International prepared plans, specifications, and estimate for roadway, structure, traffic, and drainage design of a 3.8-mile segment of the SR-91 Westbound Widening between State College Boulevard to Brookhurst Street. The project included preparation of nearly 900 plan sheets (including 260 structure plan sheets) for this $30 million freeway widening to accommodate an additional mixed flow lane and provide for auxiliary lanes. Key design features included modifications to four interchanges, six bridge widenings, and nearly 1.5-miles of new sound wall, retaining, and ground anchor (tie-back) walls. In addition, project construction impacted Caltrans ITS facilities. Plans were prepared for relocation of a changeable message sign, a traffic monitoring station, a CCTV camera, and five ramp metering systems, while maintaining functionality of the Caltrans fiber optic communication trunk throughout construction.

Project Justification:

The SR-91 Westbound Widening project corrected a long standing congestion hot spot due to the south bound SR-57 connector ramp to the westbound SR-91 being trapped off at the State College Boulevard off-ramp, just 1,700 feet from the connector merge point.  This project added a new, fourth mainline lane to eliminate this condition and improve traffic flow and safety.  In addition, a challenging right of way constraint was overcome through a collaborative PDT assessment as described below.

Special Circumstances:

Right of way concerns, in regard to property acquisitions from 23 residences, were reassessed during the final design phase.  A proposal deceleration lane for the Euclid off-ramp, coupled with the need for a SCE 12KV overhead line relocation and corresponding easement, had a significant impact to the 23 resident parcels in regard to remaining useable yard and limited clearance from the relocated SCE line for the homes.  OCTA, Caltrans, City of Anaheim and Michael Baker International came together to re-analyze the need for the deceleration lane weighed against the property impacts and determined that the additional deceleration lane was not required in the opening and design years. This joint assessment resulted in an $8M savings and eliminated construction disruption and permanent acquisition of significant right of way.

Project Attachments:

The Michael Baker Team identified an $8 million cost saving alternative design approach by eliminating a 1,300-foot deceleration lane at Euclid Avenue that was proposed in the original Project Report and Environmental Document. The alternative completely eliminated right-of-way impacts to 23 residences, including full takes, and avoided the removal and reconstruction of 1,300-feet of sound and retaining walls, as well as the relocation of a 12 KV Southern California Edison line.

Award Citation::

Michael Baker International prepared PS&E for roadway, structure, traffic, and drainage design of a 3.8-mile segment of SR-91 WB Widening between State College Boulevard to Brookhurst Street. This $30 million project provided an additional mixed flow lane and auxiliary lanes. The team identified an $8 million cost saving alternative that eliminated right-of-way impacts to 23 residences.

Suggested Award Summary:

As prime consultant to OCTA, Michael Baker International prepared plans, specifications, and estimate for roadway, structure, traffic, and drainage design of a 3.8-mile segment of the SR-91 Westbound Widening between State College Boulevard to Brookhurst Street. The project included preparation of nearly 900 plan sheets (including 260 structure plan sheets) for this $30 million freeway widening to accommodate an additional mixed flow lane and provide for auxiliary lanes. Key design features included modifications to four interchanges, six bridge widenings, and nearly 1.5-miles of new sound wall, retaining, and ground anchor (tie-back) walls. In addition, project construction impacted Caltrans ITS facilities. Plans were prepared for relocation of a changeable message sign, a traffic monitoring station, a CCTV camera, and five ramp metering systems, while maintaining functionality of the Caltrans fiber optic communication trunk throughout construction.

The Michael Baker Team identified an $8 million cost saving alternative design approach by eliminating a 1,300-foot deceleration lane at Euclid Avenue that was proposed in the original Project Report and Environmental Document. The alternative completely eliminated right-of-way impacts to 23 residences, including full takes, and avoided the removal and reconstruction of 1,300-feet of sound and retaining walls, as well as the relocation of a 12 KV Southern California Edison line.

The project demonstrated the collaborative teamwork of senior leadership within OCTA and Caltrans to come together and resolve a challenging issue – with a net result of no substantial change in the project delivery schedule.

CEC

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