SAN ANTONIO – Driver Attention: The eastbound and westbound main lanes of Interstate 10 at the Loop 1604 interchange on the northwest side will be closed this weekend.

But it won’t be that bad.

The eastbound main lanes of Loop 1604 will be closed Friday evening only and will remain open from 5 a.m. Saturday to 5 a.m. Monday.

Here’s an overview of what will be closed, weather permitting.

• I-10 eastbound and westbound trunk lanes and collector distributor at Loop 1604 (9 p.m. Friday to 5 a.m. Monday)

• I-10 eastbound off-ramp south of La Cantera Parkway (9 p.m. Friday to 5 a.m. Monday)

• I-10 westbound to the Loop 1604 eastbound exit ramp (9 p.m. Friday – 5 a.m. Monday)

• Eastbound I-10 frontage north of Loop 1604 (9 p.m. Friday to 5 a.m. Monday)

• Loop 1604, East and West Frontage Road at I-10 (9 p.m. Friday to 5 a.m. Monday)

• Loop 1604 eastbound main lanes on I-10 (Friday evening only, reopening at 5 a.m. on Saturday until 5 a.m. Monday )

• The four cloverleaf-shaped ramps (from Friday 9 p.m. to Monday 5 a.m.)

According to the Texas Department of Transportation, the closures will allow crews to install steel beams and continue construction of flyover ramps at the interchange. The steel girder work is currently 76% complete with 115 girders in place. The first flyover ramp is expected to open by the end of the year, connecting eastbound Loop 1604 drivers to westbound I-10.

Access to businesses will remain open during the work and law enforcement will contribute to the smooth flow of traffic at intersections. The closures could open sooner if the work is completed and the road is safe for drivers, TxDOT said.

Here is the detour information:

I-10 EB and to Loop 1604 EB

All travelers using the I-10 EB Border Route will enter the main lanes of I-10 EB north of Loop 1604 and follow signs for Loop 1604 WB. They will use the ramp from I-10 EB to Loop 1604 WB, enter the Loop 1604 WB collector-distributor, and follow it to the Loop 1604 WB frontage road. They will use the turn at La Cantera Parkway, entering the Loop 1604 EB frontage road. Travelers will follow the Loop 1604 EB frontage road to the I-10 EB frontage road. Those wishing to return to the main lanes of I-10 EB may use the first available entrance ramp. Those wishing to access the main lanes of Loop 1604 EB will follow the I-10 EB Border Road to the UTSA Boulevard turnoff. Travelers will follow the I-10 WB frontage road to the Loop 1604 EB frontage road and can enter the main lanes of Loop 1604 EB via the first available entrance ramp.

I-10 WB and to Loop 1604 EB and Loop 1604 WB

All travelers on the I-10 WB mainline will exit onto the I-10 WB frontage road via exit 556 B. Travelers wishing to access Loop 1604 EB will follow the I-10 WB frontage road to the road facade Loop 1604 EB. Travelers can access the main lanes of Loop 1604 EB via the first available entrance ramp. Travelers wishing to re-enter the I-10 WB mainline will follow the I-10 WB frontage road through the Loop 1604 interchange and enter the I-10 WB mainline at the first available entrance ramp. Travelers wishing to access Loop 1604 WB will follow the I-10 WB frontage road to the La Cantera Parkway turnoff. Travelers will enter the I-10 EB mainline north of Loop 1604 and follow signs for Loop 1604 WB. They will use the ramp from I-10 EB to Loop 1604 WB, enter the Loop 1604 WB collector-distributor, and follow it to the Loop 1604 WB frontage road. Travelers may enter the main lanes of Loop 1604 WB via the first available entrance ramp.

Loop 1604 EB Frontage Road and to I-10 WB

All travelers using the Loop 1604 EB frontage road wishing to continue via the I-10 interchange will follow the signs for I-10 EB and follow the I-10 EB frontage road to the UTSA Boulevard turnoff. Travelers will follow the I-10 WB frontage road to the Loop 1604 EB frontage road. Travelers using the mainline lanes of Loop 1604 EB seeking to access I-10 WB will exit onto the Loop 1604 EB border route via the Vance Jackson Road exit. They will follow signs for I-10 EB and follow the I-10 EB frontage road to the UTSA Boulevard turnoff. Travelers will follow the I-10 WB frontage road through the Loop 1604 interchange and enter the I-10 WB mainline lanes via the first available entrance ramp.

Loop 1604 WB Frontage Road and to I-10 EB

All travelers on the Loop 1604 WB frontage road wishing to continue through the I-10 interchange will follow the I-10 WB frontage signs and follow the I-10 WB frontage road to the La Cantera Parkway turnoff. Travelers will enter the I-10 EB mainline north of Loop 1604 and follow signs for Loop 1604 WB. They will use the ramp from I-10 EB to Loop 1604 WB, enter the Loop 1604 WB collector-distributor, and follow it to the Loop 1604 WB frontage road. Travelers using the main lanes of Loop 1604 WB wishing to access I-10 EB will continue through the I-10 interchange and exit onto the Loop 1604 WB frontage road. Travelers will use the U-turn at La Cantera Parkway, entering the Loop 1604 EB frontage road. Travelers will follow the Loop 1604 EB frontage road to the I-10 EB frontage road and can enter the I-10 EB mainline lanes via the first available entrance ramp.

Good news for motorists: no major weekend construction site closures will be scheduled between Thanksgiving and the end of the year (November 27 to December 31).