Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
what's the county name for the republican river bridge listed on 1992-06-29?

### Inputs:
table_name: table, columns: ['Name', 'Built', 'Listed', 'Location', 'County']

### Response:
SELECT County FROM table WHERE Listed = 1992-06-29 AND Name = republican river bridge