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Silverthorne CO Highway Barriers | Ideal Fencing Corp

Silverthorne sits at the I-70/SH-9 interchange at 9,035 feet where the Eisenhower Tunnel west portal exit ramps and the Dillon Reservoir basin create converging highway geometry with significant barri

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Silverthorne sits at the I-70/SH-9 interchange at 9,035 feet where the Eisenhower Tunnel west portal exit ramps and the Dillon Reservoir basin create converging highway geometry with significant barrier requirements at interchange ramps, bridge approaches, and tunnel portal end treatments. The I-70 west portal to the Eisenhower Tunnel has among the most intensive barrier specifications on the interstate system in Colorado.

Frequently Asked Questions

The Eisenhower Tunnel west portal has concrete barrier separating the tunnel portal lanes, impact attenuators at the tunnel approach islands, and bridge railing on the portal approach structures. These installations are among CDOT's highest-impact highway safety features and are maintained under CDOT Eisenhower-Johnson Tunnel Authority contracts.

Cable median barrier is not used on the divided I-70 sections immediately adjacent to Silverthorne due to median width constraints and the presence of median crossovers serving emergency access. Concrete median barrier or W-beam is used in these constrained median sections per CDOT Region 1 and Region 3 design.

I-70 bridges in Summit County use CDOT Bridge Enterprise approved bridge rail systems — concrete Type 7 bridge rail and steel bridge rail are the most common on these structures. Bridge rail installation is coordinated with CDOT Bridge Enterprise structural engineers and must conform to project-specific shop drawing approvals.

Highway Barriers in Silverthorne

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1,000+
Miles of Guardrail
10,000+
Projects Completed
25+
Years Experience
$25M+
Bonding Capacity

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