(after stating the facts as above). The material question in this case is whether the bridge, as the tow approached the draw, was in line with the center protection or pier, and was properly locked at its north end. If it were not exactly in line, then the south end probably projected into the draw, and, as there was only a margin of 2-J feet on each side of the steamer, a blow against the south end of the bridge would thrust it to the eastward, with a corresponding movement of the north end to the westward, which would carry it directly over the port quarter of the steamer. Upon the other hand, if the bridge were directly in line with the center protection, and properly locked, it is difficult to.see why the whole duty of the city to the steamer was not discharged, as the protection projected beyond the bridge on either side a distance of l-J to 2 feet, and the steamer would encounter and be warded off by the protection before it touched the bridge.

The presumption and the probabilities are that the bridge tender performed Ms whole duty in this particular. The direct testimony is all to the same effect. Not only does the tender swear that the bridge was locked, but the master of the steamer, who was standing on the pilot house, in full view of the bridge, says there was nothing in the situation to apprise him of any danger of collision, and that the bridge seemed to be perfectly parallel with the abutment, so that it could not have projected over any; and that, after he had phased the lower end of ¡.lie center protection, he suddenly heard a crash, which he at first thought was a,n explosion. There is no testimony to contradict this.

The only allegation of negligence in the libel is that “the bridge tender carelessly and negligently swung the bridge over the vessel.” There is absolutely no testimony to support this theory, and it may well be doubted whether such evidence as there is of negligence is not a material departure from the allegations of the libel, though it is probably too late to raise a question of variance in the appellate court. The bridge tender, in this connection, swears that, as the vessel passed, he was standing against the lever by which the bridge is swung, and that as he was standing there, watching, he received a sharp blow in the back, which knocked him over, and rendered him nearly unconscious. When he got up, the lever had gone around three or four times, and the bridge was over the boat. If this testimony be true, — and it seenas by no means improbable, — it indicates almost conclusively that some great force was suddenly brought to bear upon the south end of the bridge, which caused an abrupt a,nd violent motion of the bridge lever.

The negligence now relied upon is that the bridge tender failed to lock the bridge, by reason whereof the south end was struck by the steamer, and the north end driven over her port side. As already observed, there is no direct testimony to this effect, and the fact that the center protection projected beyond the bridge indicates that the steamer would come in contact with the protection before it could touch the bridge.

*110The fact that the steamer must in some way or other -have hit the bridge is accounted for by the respondent by an elm fender hanging over the port bow of the steamer — a stick of timber about 22 feet long, 12 inches wide, and 7 thick — coming in contact with the bridge. This fender was hanging over the side of the vessel at a point forward of where the vessel is widest, or where it begins to taper towards the bow. At this point the steamer was wider on deck than at her water line, tapering gradually from the deck to the keel. Her draft at this point was between 5 and 6 feet. The theory is that, as the steamer came up against the center protection, the bottom of the fender would be shoved in against her side, while the rail at the deck line, or near it, would press against the middle of the fender, and, the upper portion being held firmly by a strap to her side, the deck would make of the fender a bent bow, and as the bow was being bent by the shape of the vessel and her weight against the center protection, the fender could not withstand so great a strain, and broke at a point about 3 feet from the upper end; that, as it broke, it violently shot out and struck the bridge (this blow being followed by a continuous pressure), and started it, notwithstanding the fact that it was locked at the north end. In corroboration of this, libelant’s testimony tended to show that immediately after the collision the lower end of the fender was taken out of the water where it had fallen, while the other end remained on the bow of the boat; that there was also paint upon the fender of the color of the bridge, and that certain slivers from the fender were also taken from the damaged portion of the bridge. Libelant’s explanation of this is that the fender was not broken that night, but that two days thereafter, in coming down from the Union Elevator, the propeller got athwart the draw of another bridge, and required the assistance of tugs to pull her off; and in some way the fender got broken against the chains that went around a clump of piles at the protection. This directly contradicted the testimony of the respondent, which indicated that the lower end of the fender was picked up immediately after the collision, and laid upon the abutment of the bridge.

However improbable it may seem, that a stick of timber of the size of this fender could have been broken in the manner indicated, the testimony upon both sides tends to show that it was broken substantially in this way, either that night, by coming in contact with the bridge, or within a day or two thereafter, by coming in contact with another bridge at Sixteenth street.

We think the city cannot be charged with negligence in failing to have a lock at both ends of the bridge, though that probably would have lent additional safety. The object of the lock is merely to hold the bridge in position over the center protection, and not to resist the impact of a moving vessel. The lock is simply a revolving iron pulley of five or six inches in diameter that, falls into a groove or notch of the size of the pulley at the end of the latch, and half its diameter in depth, so that it would not be difficult, with a strain on the bridge, to have the latch roll out of the notch or groove into which it falls. While such additional lock might have increased its resisting power, it is merely a matter of conjecture whether it would *111have been sufficient to prevent a collision. There is no allegation in the libel upon the subject. The duty of the city in that regard was not to supply every possible protection, but only such as experience shows to be necessary in the usual use of the bridge. We think the city was not bound to go further, and provide appliances which would enable the bridge to resist the-impact of a heavy steamer.

We do not think the mere fact that the north end of the bridge inflicted the injury shifts upon the city the burden of accounting for it and exonerating itself. This injury was so obviously the effect ef a sudden thrust at the south end that it belongs to- the steamer to establish the fault of the city there.

Upon the whole case we are of opinion that, while the actual facts are by no means free from doubt, libelant has not made out its case by a preponderance of testimony. If there be any such preponderance, one way or the other, it is rather in favor of the respondent. Where fault is evident, but cannot be satisfactorily located, the libel should he dismissed. The Worthington and Davis, 19 Fed. 836.

The decree of the court below must therefore be reversed, and the case remanded, with directions to dismiss the libel.