Professional Civil + Structural EngineeringDover, New Jersey · rjohnson@drjassoc.com
Capabilities

Engineering that crosses the lines when the project does.

DRJ works across civil, structural, drainage, retaining-wall, municipal, precast, and specialty engineering because real projects rarely stay inside one box.

Core service areas

One problem. Multiple disciplines when needed.

01

Retaining Wall Engineering

Large-block, segmental, gravity, reinforced soil, replacement, tiered, flood-related, and constrained wall systems.

Explore →
02

Structural Engineering

Buildings, foundations, concrete, steel, masonry, specialty structures, repairs, and existing-condition evaluations.

Explore →
03

Site + Civil Engineering

Grading, access, parking, ADA, utilities, site plans, septic coordination, and land-development infrastructure.

Explore →
04

Stormwater + Drainage

Stormwater management, drainage design, flood investigation, culverts, erosion control, and corrective design.

Explore →
05

Municipal + Infrastructure

Roadways, sanitary sewer, utility rehabilitation, drainage, public works, bid documents, and construction-phase engineering.

06

Precast + Specialty Engineering

Precast components, shop drawings, lifting systems, specialty fabrication, custom structural analysis, and unusual one-off engineering problems.

How DRJ fits

Not every project needs a giant team.

Sometimes the project needs one experienced engineer who can understand the site, structure, drainage, construction sequence, and permitting problem together. DRJ is intentionally structured for that kind of work.

Bring the real problem.

A sketch, a field condition, a review comment, a failed concept, a difficult geometry, or a project nobody else wants to touch can be enough to start the conversation.

Have a project that does not fit neatly into a category?

Start a Project