Measure D has apparently won by a hair.

Passage authorizes the San Ramon Valley school district to issue up to $260 million in bonds to finance 45 infrastructure and technology upgrades at San Ramon Valley district schools.

The vote count for Measure D currently gives it 56.46 percent of the vote, slightly more than the 55 percent needed for passage. The total number of "yes" votes are 35,842, with 27,643 "no" votes.

However, on Friday, Registrar of Voters Steve Weir said there are 1,600 late conditional ballots and more than 23,000 provisional ballots left to count countywide and a final certified vote count is not expected until the first week of December.

With Measure D, property owners in the San Ramon Valley can expect to see their property taxes increase by an annual average of $27.75 per $100,000 of a home's assessed valuation, according to district estimates.

Projects to be funded include seismic upgrades; upgrades to electrical, heating and air-conditioning systems; technology infrastructure upgrades; security cameras; new classrooms; new stadium bleachers at San Ramon Valley and Monte Vista high schools; and a new $31 million elementary school in Dougherty Valley.

Contact Jason Sweeney at 925-847-2123. Follow him at Twitter.com/Jason_Sweeney.