Credit Ratings

Issuer	Project	Security Description	Global Rating	National Rating	Rating Agency	Last Update
Empresas ICA, S.A.B. de C.V.	EMICA Corporate Notes	US$500 million due 2021	B+		S & P	Feb 03, 2011
Empresas ICA, S.A.B. de C.V.	EMICA Corporate Notes	US$500 million due 2021	B1		Moody´s	Dec 20, 2011
Túneles Concesionados de Acapulco	Acapulco Tunnel	Ps. 1,250 million due 2034		AA+	Fitch Ratings	Mar 25, 2008
Autopista del Mayab	Mayab Highway	Trust Certificates	BBB	AAmex	Fitch Ratings	Dec 07, 2009
			BBB-		Fitch Ratings	Dec 07, 2010
			Baa2	Aa2.mx	Moody's	Mar 13, 2010
PASACB, PASACB1U	SPC Sarre, SPC Papagos	Trust Certificates, Peso and UDIs		AAA(mex)	Fitch Ratings	Sep 26, 2011
	SPC Sarre, SPC Papagos	Trust Certificates, Peso and UDIs		mxAAA	S & P	Aug 4, 2011