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Image 4 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

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Image 6 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

Image 7 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

Image 8 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

Image 9 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

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Image 11 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

Image 12 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

Image 13 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

Image 14 of 19 Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Crews work the scene of an overturned 18-wheeler in the West Bound lane of I-10 Wednesday, May 30, 2012, in Houston. (Cody Duty / Houston Chronicle) Photo: Houston Chronicle

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Image 16 of 19 Photo: TXDOT

Image 17 of 19 Photo: TXDOT

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