Texas Transportation Code - TRANSP § 441.154. Depository

(a) The board shall name one or more banks to serve as depository for district money.

(b) The district shall deposit money, other than money transmitted to a bank of payment for district bonds, with the depository bank as received. The money shall remain on deposit, except that this section does not limit the board's power to invest district money as provided by Section 441.156.

(c) The district may not deposit money in a bank in an amount that exceeds the maximum amount secured by the Federal Deposit Insurance Corporation unless the bank executes a bond or provides other security in an amount sufficient to secure from loss district money that exceeds the amount secured by the Federal Deposit Insurance Corporation.