THE designs for Donald Trump’s planned US border wall with Mexico have finally been revealed.

Among them are proposals for bombproof concrete, tunnelling alarms and even storage for nuclear waste.

Companies were invited to submit their proposed designs for the controversial barrier, which the president has said will span all the way from the Gulf of Mexico to the Pacific.

7 In the design by DarkPulse Technologies, fibre sensors will be embedded in the concrete to alert officials to people tunnelling beneath the wall Credit: AP:Associated Press

7 Gleason Partners's design includes solar panels covering sections of the wall Credit: AP:Associated Press

One bidder wants to cover the wall with solar panels, while another wants to make a barrier big enough for a deck offering tourists scenic views of the desert.

The deadline for bids passed yesterday with the federal government expected to announce which companies will be hired to build prototypes around June 1.

Designs must be able to repel pickaxes and sledgehammers for at least an hour and be nice to look at – at least from the north side.

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Trump's multibillion-dollar plan promises potentially colossal profits – but also risks inviting a backlash from people who oppose the project.

But that didn’t stop companies from releasing their plans – revealing a range of ideas from the practical to the whimsical.

Concrete Contractors Interstate proposed a polished concrete wall augmented with stones and artefacts that are tailored to different sections of the 2,000-mile border.

Russ Baumgartner, CEO of the San Diego-based company, said: "The idea is to make the wall a piece of art."

7 Concrete Contractors Interstate's proposal is for a polished concrete wall that can be augmented with stones and artefacts specific to local areas it cuts through Credit: AP:Associated Press

7 An example of some of the stones and artefects that could be used to decorate the wall in Concrete Contractors Interstate's design Credit: AP:Associated Press

7 Trump's administration will consider the designs and ask some companies to build prototypes Credit: AP:Associated Press

Gleason Partners LLC of Las Vegas said its solar panels would generate two megawatts of electricity an hour.

Gleason Managing Partner Thomas Gleason said: "For the younger generation, they say if there is going to be a wall, let's have it be green."

Both Gleason and Concrete Contractors’ proposals were first reported by The San Diego Union-Tribune.

The other specifications like preventing people tunnelling under the wall will eliminate some designs immediately.

DarkPulse Technologies of Scottsdale, Arizona, proposes a concrete wall that can withstand tampering or attacks of any kind.

Company founder Dennis O'Leary said: "You could fire a tank round at it and it will take the impact."

Fibre sensors would be embedded in the concrete to immediately alert officials to any attempts to tunnel under the wall.

And it would be coated with a slick coating that would prevent climbing.

Why is Donald Trump building a wall along the US border with Mexico? During his presidential campaign Trump promised voters that he would take a hard stance on immigration and put a wall up. He maintained Mexicans would have to pay for it, saying he wanted to construct a barrier to keep out Latino migrants. The tycoon said he would build an “impenetrable, physical, tall, powerful, beautiful, southern border wall” between the US and Mexico. While he repeatedly slammed Mexicans as “rapists” and “criminals”. He signed an executive order soon after coming into office to begin work on the structure, emphasising the importance of the plan in his first speech to Congress. But he made no mention at all of forcing Mexico to pay for it – the pledge he made throughout his election campaign. If he is unable to make Mexico bear the costs of the wall then it is expected to cost almost £17billion, or £130 per US household.

Clayton Industries of Pittsburgh proposes storing nuclear waste along the wall in trenches that are at least 100ft deep.

Under this proposal, cash already collected by the US Department of Energy from people who benefit from nuclear power would help pay for the wall.

The bid includes an option for hardware to convert the nuclear waste to energy.

7 A large section of the US border with Mexico is already covered by a fence Credit: AP:Associated Press

The winning company must also have done border security or similar projects worth $25million (£20million) or more in the past five years.

Bidders were also asked to submit security plans and demonstrate experience "executing high-profile, high-visibility and politically contentious" projects.

A US official with knowledge of the plans – speaking on condition of anonymity because the details have not been made public – said four to ten bidders are expected to be chosen to build prototypes costing $200,000-500,000 (£160,000-£400,000) each.

The prototypes will be constructed on a quarter-mile strip of government land within 120ft of the border – though the precise spot has yet to be confirmed, the official said.

7 Donald Trump signed the executive order to begin work on the wall in January Credit: Getty Images

An "interested vendors list" on a government website for contractors lists more than 200 companies.

It's unclear how many of those companies bid and how many that do not appear on the list submitted proposals.

Grabowski said: "If you win, you have a contract. If you lose, you have the publicity of competing for the business without the payoff of the contract.

"I think companies would want to avoid that."

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