) 148.88 River Cherwell , Oxford 146.83 Isis Bridge - Oxford Ring Road ( A423 ) 143.34 River Thame , Dorchester-on-Thames 136.47 Abingdon Bridge , Abingdon ( A415 ) 131.02 Appleford R'way Bridge ( GWR to Birmingham ) 115.41 Wallingford Bridge , Wallingford 110.10 Moulsford Railway Bridge (GWR to Bristol )