PROJECT DETAILS

The FDOT conducted the I-75 PD&E study in conjunction with Hillsborough County and the Federal Highway Administration (FHWA). The study documented information necessary for the FDOT and FHWA to reach a decision on the type, design and location of improvements to I-75.

Based on long-range planning, projected population, employment growth and projected traffic volumes, the Hillsborough Metropolitan Planning Organization (MPO) has made this a priority project in Hillsborough County. The Hillsborough County MPO’s 2035 LRTP Needs Assessment Map, adopted on December 9, 2009, indicates the need for managed lanes throughout the length of the project and a total of 12 travel lanes from south of US 301 to I-4 and ten travel lanes from I-4 to north of Fletcher Avenue.

This portion of I-75 was evaluated in the Programming Screen of the Efficient Transportation Decision Making (ETDM) process as Project # 8002 in 2007. During preliminary planning for this project through the FDOT’s ETDM screening process, agency comments were received. As a result the Federal Highway Administration has determined that this project qualifies as a Type 2 Categorical Exclusion.

PREFERRED TYPICAL SECTIONS

The Preferred Alternative typical section for the northern study includes three 12-foot GULs with auxiliary lanes, in each direction.  Inside and outside shoulders will be 12-feet wide.  Adjacent to the GULs, within the median, two 12-foot ELs with 12-foot inside and outside shoulders will be included in each direction.  The ELs will be separated from the GULs by a 2-foot concrete barrier.  Most of this widening will be done to the inside of the existing lanes within the existing right-of-way.

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Southern PD&E Study

PROJECT DETAILS


The FDOT conducted the I-75 PD&E study in conjunction with Hillsborough County and the Federal Highway Administration (FHWA). The study documented information necessary for the FDOT and FHWA to reach a decision on the type, design and location of improvements to I-75.

Based on long-range planning, projected population, employment growth and projected traffic volumes, the Hillsborough Metropolitan Planning Organization (MPO) has made this a priority project in Hillsborough County. The Hillsborough County MPO’s 2035 LRTP Needs Assessment Map, adopted on December 9, 2009, indicates the need for managed lanes throughout the length of the project and a total of 12 travel lanes from south of US 301 to I-4 and ten travel lanes from I-4 to north of Fletcher Avenue.

This portion of I-75 was evaluated in the Programming Screen of the Efficient Transportation Decision Making (ETDM) process as Project # 8002 in 2007. During preliminary planning for this project through the FDOT’s ETDM screening process, agency comments were received. As a result the Federal Highway Administration has determined that this project qualifies as a Type 2 Categorical Exclusion.

PREFERRED TYPICAL SECTIONS

The Preferred Alternative typical section consists of 12 travel lanes with three 12-foot general use lanes (GULs) in each direction and three 12-foot special use lanes (SULs) in each direction. The proposed typical section would provide a minimum 22-foot median that would include a 2-foot concrete barrier wall and 10-foot paved shoulders on both sides of the wall. A 6-foot buffer, consisting of paint and/or plastic pylons, would separate the SULs from the GULs. Under the Preferred Alternative, the proposed widening of I-75 would mainly occur to the inside, within the existing median. The widening of I-75 can be constructed within the existing right of way. Additional right of way will be required, however, for interchange enhancements, stormwater management facilities, and floodplain compensation sites.

>> Click Here to view Draft Study Documents


Click here to view a larger version