Border wall prototype construction wrapping up

SAN DIEGO, Calif. (KGTV) -- Contractors working on the border wall prototypes have a week to finish their models. 

10News got a tour of the construction site on Wednesday morning. Construction started on Sept. 26. 

Contractors must meet several requirements while building these prototypes. The structures must be anti-breaching, anti-climbing, anti-digging and safe for Border Patrol agents to patrol. 

RELATED COVERAGE:

• Councilmember says border wall would hurt San Diego economy, environment
• See-through border wall prototype contracts awarded by CBP
• Law enforcement prepping for border wall protests
• Border wall construction worker falls down 40-foot hole
• CA Attorney General announces border wall lawsuit in San Diego

The companies building the prototypes are all from out of state; from Mississippi, Maryland, Alabama, Texas, and Arizona. Two companies are building two different prototypes, one from concrete, the other from "other than concrete" material. 

Here's a full list of companies:

1. W.G. Yates & Sons Construction Company (other than concrete material)

2. W.G. Yates & Sons Construction Company (concrete) 

3. ELTA North America Inc. (other than concrete material)

4. Caddell Construction Co., (DE),LLC (concrete)

5. Caddell Construction Co., (DE),LLC (other than concrete material)

6. Texas Sterling Construction Co. (concrete)

7. KWR Construction, Inc. (other than concrete material)

8. Fisher Sand & Gravel Co., DBA Fisher Industries (concrete)

Contractors have seven days to finish their prototypes. When they're complete there will be a period of evaluation for the government to pick the best one. 

So far, it's unclear if President Donald Trump will visit the construction site in the Otay Mesa area when the prototypes are complete.