Keybridge Capital will stop investing, stop paying dividends and may eventually return capital to shareholders, though not for another three years or more.The board of the niche investor in senior and junior debt and select transport and property assets has effectively resolved to wind down the business, though this will take six years or more.Established by some former Allco executives in mid 2006 and set up at the time under the umbrella of the Mariner Financial group, the Keybridge business model struck trouble less than a year after its creation out of the remains of ASX-listed investment company Mariner Wealth Management.The credit crunch of mid 2007, and the subsequent malaise in the global economy and world markets, means there's not much support among investors for Keybridge.So while loan losses and investment losses are on the low side and the firm continues to report a profit, the board has concluded that a steady repayment of bank loans and then a gradual return of capital is the best option.Profit was $1.3 million in the half-year to December 2008. Keybridge did pay a dividend of $13 million in September 2008 but there no won't be any for the foreseeable future.The value of the Keybridge investment portfolio increased to $453 million, largely due to the decline of the Australian dollar against the US dollar. There was one new investment early in the last half.The firm incurred an impairment of $20.5 million on loan to a Chilean copper mine, probably Disputada de Las Condes and recognised another $4.7 million impairment, mainly a collective provision again property loans.