How Close Is Too Close To the Freeway?

[Henry Liang]

I'm looking at a 900k new duplex construction in South LA near 59th st.  It's 10 bed/6 bath, with total rent approximating 6k?

According to computations it would cash flow at $1300 per month with 25% down.

Only problem is it's about 1,090 feet from the freeway.  I asked a real estate friend and he told me to stay away because that could destroy its appreciation rate in the long term.  Whereas the agent trying to sell me it says it only matters if you're very close to the freeway.  Who's right here?