Project experience
I-895 Toll Plaza and Interchange Improvement
Drilling, In-Situ Testing
Location
Baltimore, Maryland
Market
Transportation
Year
2023
Services performed
Soil Borings/ Geotech Drilling/ Cone Penetration Testing/ Geotechnical Data Reports/ In-Situ Test Interpretation
SPT + CPT
supplemental subsurface testing
1.5-2x
higher values from CPT testing
Cost
more efficient design support
SPT borings and supplemental CPTs for toll plaza, ramp, and bridge replacement design.
CPT testing produced modulus, shear strength, end bearing, and skin friction values roughly 1.5-2x higher than nearby SPT-derived values, supporting a more cost-effective design.