Just when Boise State looked vulnerable, Kellen Moore and the Broncos reminded a national television audience why they've been unbeatable.

Moore threw for 354 yards and three touchdowns, and No. 5 Boise State survived a brief scare on the road with a 45-35 victory on the road over upstart Louisiana Tech on Friday night.

Tech had pulled within 30-28 early in the fourth quarter on Dennis Morris' leaping catch in the corner of the end zone. The Broncos' defense buckled down long enough after that for Boise State to pull away with touchdowns on consecutive drives, the second score coming on Jeremy Avery's 44-yard touchdown run.

Avery finished with 146 yards rushing, while Titus Young caught eight passes for 110 yards, including a 40-yard touchdown for Boise State (9-0, 4-0 Western Athletic Conference).

Trailing 27-7 at halftime, Tech (3-6, 2-4) made a game of it in the third quarter, starting with Josh Victorian's first career touchdown on Moore's third interception of the season. It was an ill-advised throw under pressure that hung in the air for Victorian, who raced down the sideline and cut inside Moore to cap a 75-yard return.

Boise State responded with a 15-play drive to set up Kyle Brotzman's third field goal on four tries, then Tech's offense came to life. It got its first first down in two quarters on the way to a 73-yard scoring drive capped by Ross Jenkins' 9-yard keeper around the right end to make it 30-21.

Tech's Matt Nelson then caught the Broncos by surprise with an onside kick that he recovered himself. Shortly after, Jenkins found Morris over the middle for 36 yards to the Boise State 12, setting up Jenkins' third-down pass to Morris, who leaped to catch the ball over defensive back Kyle Wilson's head.

When Brotzman missed his second field goal of the game on the Broncos' next drive, the crowd was going wild, and it appeared the Bulldogs just might upset the highest-ranked team ever to play at Joe Aillet Stadium.

OSU's Bryant heading for NFL draft — Oklahoma State wide receiver Dez Bryant told ESPN.com that he plans to enter the 2010 NFL draft, disclosing his intentions after the NCAA rejected a final appeal by the school to reinstate the junior All-American who lied about contact with former NFL player Deion Sanders.

Bryant sat out the first five games while the NCAA investigated his offseason meeting with Sanders at a Texas athletic center. Bryant admitted that he lied to an NCAA investigator about the meeting and later apologized.