Yes, there is a branch of South Indian Bank located on Avinashi Road. I am providing details about this Branch here:

THIRUPUR - AVINASHI ROAD
DO.NO.35(1), WARD NO: 23, IST STREET, AVINASHI ROAD, NEAR CSI CHURCH, INDIRA NAGAR, TIRUPPUR, TAMIL NADU-641603

Br.Incharge : Mr.KRISHNA KUMAR P.,
ASSISTANT GENERAL MANAGER

Region : COIMBATORE

IFSC Code : SIBL0000338

Phone : 0421-2242434

Email : br0338@sib.co.in

Other Nearest Branches of South Indian Bank here:

THIRUPUR
DO.NO.256/158, OPP. TO TALUK OFFICE, KUMARAN ROAD, TIRUPUR, TAMIL NADU-641601

Br.Incharge : Mr.RAYNER.H.EPHRAIM,
CHIEF MANAGER

Region : COIMBATORE

IFSC Code : SIBL0000083

Phone : 0421-2232722

Email : br0083@sib.co.in

UDUMALPET
SREE TOWERS, 168/4, PALANI ROAD, P.O.GANDHI NAGAR, UDUMALPET, TIRUPPUR, TAMIL NADU-642154

Br.Incharge : Mr.SACHIN JOSEPH,
SENIOR MANAGER

Region : COIMBATORE

IFSC Code : SIBL0000349

Phone : 04252-224075

Email : br0349@sib.co.in

KODUVAI
RAJALAKSHMI COMPLEX (1ST FLOOR), 7/131, MAIN ROAD, KODUVAI P.O., TIRUPPUR, TAMIL NADU-638660

Br.Incharge : Mr.ARJUN K T M,
MANAGER

Region : COIMBATORE

IFSC Code : SIBL0000099

Phone : 0421-2312240

Email : br0099@sib.co.in

KONGALNAGARAM
DO.NO.2/14, WARD NO.2, POLLACHI-DHARAPURAM MAIN ROAD, NEXT TO POST OFFICE, KONGALNAGARAM P.O., TIRUPPUR, TAMIL NADU-642205

Br.Incharge : Mr.ROGER BURTON V,
ASSISTANT MANAGER

Region : COIMBATORE

IFSC Code : SIBL0000866

Phone : 04252-247048

Email : br0866@sib.co.in

PALLADAM
NO.30A, TRICHY ROAD PALLADAM, TIRUPPUR, TAMIL NADU-641664

Br.Incharge : Mr.DILIP GOVIND,
MANAGER

Region : COIMBATORE

IFSC Code : SIBL0000662

Phone : 04255-252488

Email : br0662@sib.co.in