TULSA, Oklahoma - The Oklahoma Department of Transportation says an I-244 bridge project will cause headaches for drivers headed to the Tulsa State Fair starting Thursday.

That project impacts, Harvard, Yale and Memorial bridges over I-244.

When the fair starts Thursday, ODOT says all three bridges will be down to one lane in both directions over the interstate highway. 

Also the two left lanes of east and westbound I-244 are currently closed between Harvard and Yale.

News On 6 told you back in July that crews would be working on those bridges.

ODOT is replacing the bridge decks and making repairs to each bridge's substructure.  They say all of the bridges were built in 1967 and all are considered structurally deficient. 

The department says the project should be finished by next summer.