CELPIP Reading Part 3 Practice Test: Wildlife Crossings Across Busy Roads

Paragraph A

Wildlife crossings reconnect habitat divided by roads. The crossing itself is usually paired with fencing that guides animals toward an entrance and keeps them off the road. A structure without guidance may be rarely used by animals, while fencing without a usable crossing can trap animals on the wrong side or block movement entirely. The objective is not merely to reduce carcasses beside the highway. Effective connectivity also allows seasonal migration, access to mates and food, and genetic exchange among populations separated by traffic. Fencing ends are extended or shaped carefully because animals that follow a barrier to its edge may otherwise enter the road at a concentrated point.

Paragraph B

Design follows the target species and landscape. A deer may use a wide, open underpass, whereas a small mammal may prefer cover and a dry ledge above water. Amphibians need suitable moisture and entrances aligned with seasonal routes. Building one average passage for every animal can serve none well. Designers use track surveys, collision records, cameras, and local ecological knowledge to identify users and locations. Multiple structures may be needed because a predator, prey species, and animal moving along a stream do not necessarily share the same route. Water crossings need hydraulic capacity for floods as well as dry ledges for animals, preventing ecological design from creating an upstream drainage obstruction.

Paragraph C

Cameras, track pads, and genetic sampling can show that animals use a crossing, but use alone does not prove a population benefit. Researchers compare movement and collisions before and after construction and, where possible, with an untreated road section. A temporary fall in roadkill could reflect a population decline rather than safer passage. Monitoring also records failed approaches, fence breaches, and animals turning away. These observations identify whether the barrier, entrance, or surrounding habitat needs adjustment instead of treating every photographed crossing as equal success. Individual use may rise before genetic exchange becomes measurable, so monitoring timelines are matched to the biological outcome rather than the construction schedule.

Paragraph D

Maintenance determines whether the investment remains connected to habitat. Development beyond the highway may later remove the habitat that animals were meant to reach. Land protection and municipal planning are therefore part of crossing design even when another agency owns the road. Human use can also deter sensitive species, so recreational access is managed where necessary. Long-term success combines a functional structure, continuous guidance, suitable habitat on both sides, and repeated inspection after storms and road work. Inspection records link each repair to later animal response, helping agencies decide whether maintenance restored function or whether the original design remains unsuitable.

Paragraph E

Not given in any of the above paragraphs.