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Lathrop looks to upgrade Roth & I-5 interchange

The City of Lathrop knows that development projects currently scheduled within Lathrop’s city limits as well as in nearby Manteca and unincorporated San Joaquin County are going to drive up the volume of traffic on Roth Road. 

And they’re hoping that the assistance of a consultant will help mitigate the impacts for what is already an overloaded interchange with Interstate 5. 

When the Lathrop City Council meets on Monday at 7 p.m. at Lathrop City Hall – located at 390 Towne Centre Drive – they will consider awarding a contract to Dokken Engineering as one of two firms that responded to a request for proposal about the I-5 and Roth Road interchange and the Harland Road realignment project. 

And it won’t be an easy thing to draw up. 

According to the staff report prepared for the item, the two-phase project will first require shifting the intersection of Harlan Road and Roth Road 600-feet to the east before work can begin on building new interchange ramp improvements that will cater to the increased traffic flow. 

If the council approves the contract as submitted for the RFP, the design work for the two-phases will cost just below $1.12 million – already budgeted as a capital improvement project for the 2021/22 budget year. 

Previously used to cater to traffic that was accessing local businesses and the nearby Sharpe Army Depot when it was fully operational, the Roth Road interchange at I-5 has become a hotbed for truck traffic ever since the Lathrop City Council approved the construction of a Pilot/Flying J Truck Stop as a way to boost sales tax revenue in the city and add even more to the city’s coffers for things like public safety. 

Development in the area both inside and outside of Lathrop’s city limits has also added to the truck traffic in the area, and with large warehouse buildings being included near Roth Road and Airport Way as part of the CenterPoint development, city planners are thinking ahead as a way to thwart long-term problems along what was always a relatively local route. 

The Lathrop City Council, which meets on the second Monday of the month at 7 p.m. inside of the council chambers at Lathrop City Hall – located at 390 Towne Centre Drive – will discuss the matter further before formally voting on awarding the contract to Dokken Engineering. 

The staff report for the item as well as the agenda for the upcoming meeting can be found by visiting the City of Lathrop’s website at 

To contact reporter Jason Campbell email or call 209.249.3544.