DIFFICULTIES IN EVALUATING THE CONDITION

OF LARGE BRIDGE DECKS?

 

Collecting information on the condition of large and complex bridge decks by conventional means can be difficult and present safety concerns for inspectors and the public. Ground penetrating radar is a technology that solves this problem. Penetradar Corporation specializes in the inspection of large and complex bridge decks with our patented ground penetrating radar (GPR) four antenna array which allows simultaneous collection of radar data across a twelve foot lane in one pass. Four channels of radar data are collected with the same distance referencing eliminating inconsistencies in distance correlation between radar passes which are a problem associated with single and dual channel systems that must make multiple passes to cover a lane. With our system, we can scan large and complex bridge decks efficiently and economically in just a short time with a single pass over each lane collecting data at highway speeds, thereby eliminating traffic congestion, road closures and safety concerns.

Penetradar’s GPR has become the technology of choice by transportation agencies across North America as evidenced by the representative projects shown below. All the bridge decks shown were inspected in only a few hours at highway speeds and without any traffic disruption.

Walt Whitman Bridge - 1,102,000 sqft

The Walt Whitman Bridge is one of the largest bridges on the east coast at almost 12,000 feet in length and carries seven lanes of Interstate 76 over the Delaware River between Philadelphia, PA and Gloucester City, NJ with a daily traffic volume over 100,000 vehicles.

Besty Ross Bridge - 890,925 sqft

The Betsy Ross Bridge is over 8,000 feet in length and carries six lanes of eastbound and westbound Route 90 traffic across the Delaware River between Philadelphia, PA and Pennsauken, NJ. The average daily traffic volume is almost 40,000 vehicles.

Jacques Cartier Bridge - 809,208 sqft

The Jacques Cartier Bridge in Montreal, Quebec, Canada is just under 9,000 feet in length and crosses the St. Lawrence River carrying five lanes of Route 134. With a traffic volume of 100,000 vehicles a day the bridge is the third busiest in Canada.

Delaware Memorial Bridge - 636,020 sqft

The Delaware Memorial Bridge is made up of two suspension bridges that carry eight lanes of Interstate 295 over the Delaware River connecting New Jersey and Delaware. The bridge is over 10,000 feet in length and more than 50,000 vehicles cross the bridge daily.

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