ten o'clock
In this portion of the line also the Government subsidy had been raised to forty-eight thousand dollars a mile , instead of the sixteen thousand dollars a mile on the plains ; but the engineers , so it is said , had stolen a march on nature , turned all the difficulties instead of cutting through them , and pierced only one tunnel of fourteen thousand feet in length . At Salt Lake the line reached its greatest altitude -- from that point it took a long curve towards Bitter-creek Valley , and then rose again to the watershed between the valley and the Pacific Creeks were numerous hereabout , and Muddy Creek , Green Creek , and others were successively crossed on culverts . As they approached the end of their journey Passe-partout became more and more impatient , while Fix was very anxious to get on , for he feared delays and accidents , and was more anxious to reach England than even Phileas Fogg . The train stopped for a short time at Fort Bridger at ten o'clock , and twenty miles farther on entered Wyoming State , formerly Dakota . The next day , the 7th of December , they stopped at Green River . Sleet had fallen during the night , but not sufficient to interfere with the traffic . However , this bad weather annoyed Passe-partout very much , for any great fall of snow would have compromised the success of the journey .