ANDERSON, Circuit Judge.

The issue presented by this appeal is whether authorization from the Interstate Commerce Commission (ICC) to abandon a railroad line, see 49 U.S.C. § 10903, is a prerequisite to a court's determination that the railroad has abandoned the right of way for purposes of 43 U.S.C. § 912. In light of the reasonableness of the ICC's determination that its authorization under Section(s) 10903 is a prerequisite to Section(s) 912 abandonment, we affirm.

Plaintiff, a Colorado limited partnership owning land adjacent to a portion of defendants' Aspen Branch railroad line, commenced this action under Section(s) 912, seeking to quiet title to the right of way underlying the adjacent rail line in itself. Plaintiff alleged that defendants' interest in the right of way was granted by the United States by statute in 1875 and that defendants had abandoned that right of way no later than October 3, 1988.

Section 912 provides, in part, and with exceptions not applicable here, that

[w]henever public lands of the United States have been . . . granted to any railroad company for use as a right of way for its railroad . . ., and use and occupancy of said lands for such purposes has ceased . . ., whether by forfeiture or by abandonment by said railroad company declared or decreed by a court of competent jurisdiction or by Act of Congress, then and thereupon all right, title, interest, and estate of the United States in said lands shall . . . be transferred to and vested in any person, firm, or corporation, assigns, or successors in title and interest to whom or to which title of the United States may have been or may be granted, conveying or purporting to convey the whole of the legal subdivision or subdivisions traversed or occupied by such railroad. . . .

Pursuant to 28 U.S.C. § 1336(b), the district court referred to the ICC the issue of whether defendants had abandoned the railroad line. The ICC determined that no abandonment had occurred because the ICC had never authorized defendants to abandon the line, as required under 10903, which provides that "[a] rail carrier providing transportation subject to the jurisdiction of the [ICC] . . . may . . . abandon any part of its railroad lines . . . only if the [ICC] finds that the present or future public convenience and necessity require or permit the abandonment. . . ." Section(s) 10903(d)(1).

Following the ICC's decision, the district court granted defendants summary judgment in the Section(s) 912 action, deferring to the ICC's determination that no abandonment could occur under Section(s) 912 until the ICC had authorized defendants, under Section(s) 10903, to abandon the railroad line. Phillips Co. v. Southern Pac. Rail Corp., 902 F. Supp. 1310, 1311-12 (D. Colo. 1995). Plaintiff appeals the district court's decision.

This court reviews a summary judgment decision de novo, viewing the record in the light most favorable to the nonmoving party. Carl v. City of Overland Park, 65 F.3d 866, 868 (10th Cir. 1995). Summary judgment is appropriate only if there are no genuinely disputed material issues of fact and the nonmoving party is entitled to judgment as a matter of law. Fed.R.Civ.P. 56(c).

The relevant statutory language does not clearly indicate the appropriate interplay between Section(s) 912 and Section(s) 10903. Where, as here, therefore, the statutory language is ambiguous, this court must defer to a reasonable interpretation of the statute by the agency responsible for its administration. National R.R. Passenger Corp. v. Boston Maine Corp., 503 U.S. 407, 417-18 (1992) (citing Chevron, U.S.A., Inc. v. Natural Resources Defense Council, Inc., 467 U.S. 837 (1984)). The ICC reasoned that its authorization was necessary, prior to a judicial determination of abandonment under Section(s) 912, in light of the agency's "exclusive and plenary . . . authority over the abandonment of rail lines," citing Chicago N.W. Transp. Co. v. Kalo Brick Tile Co., 450 U.S. 311 (1981), and because, if de facto abandonment were sufficient to establish abandonment under Section(s) 912, a railroad could easily circumvent the ICC's oversight and regulation by simply terminating its use of a railroad line. Phillips Co., 902 F. Supp. at 1316-17. Because we cannot say that the agency's interpretation of the relationship between these statutes is unreasonable, we must defer to the ICC's determination.

Modern Handcraft, Inc. — Abandonment in Jackson County, Mo., 363 I.C.C. 969, 1981 WL 22670 (I.C.C.) (Aug. 19, 1981), is not to the contrary. In that case, a public transportation authority had initially attempted to obtain title to a railroad right of way through a state court condemnation action. Id. at *3 (citing Kansas City Area Transp. Auth. v. Ashley, 555 S.W.2d 9 (Mo. 1977), cert. denied, 434 U.S. 1066 (1978)). The state supreme court balked, noting that the ICC had jurisdiction over the railroad as a common carrier and that legal abandonment of the rail line could be accomplished only pursuant to an ICC order. Id. The public transportation authority, along with the private landowners adjoining the right of way, then pursued a certificate from the ICC authorizing abandonment, which the ICC granted after noting that the railroad had already ceased using the right of way for railroad purposes.

In Modern Handcraft, Inc., therefore, the third parties possessed a present reversionary interest in the right of way at issue, and were able to obtain the ICC's permission for the abandonment of the railroad based upon proof of a de facto abandonment and based upon the ICC's determination that present and future public convenience and necessity permitted the abandonment. In this case, on the other hand, plaintiff is hard pressed to assert a present reversionary interest in the right of way, in light of 16 U.S.C. § 1248(c), and instead seeks a retroactive determination that the right of way reverted to it prior to the effective date of Section(s) 1248. The ICC has indicated, however, with no argument from plaintiff, that it has no authority to authorize, retroactively, the abandonment of a rail line. Appellant's App. at 189 (ICC indicated it does not "issue certificates authorizing abandonment as of a past date," citing Section(s) 10903(a)'s language requiring ICC to make findings of "present or future" public convenience and necessity in abandonment proceedings). Plaintiff's arguments relying upon Modern Handcraft, Inc., therefore, are unpersuasive.

On appeal, plaintiff argues, for the first time, that this case must be remanded in light of the ICC's exemption from formal abandonment procedures, available for railroad lines that have been out of service for more than two years. See 49 C.F.R. § 1152.50. This argument fails, not only because plaintiff failed to raise this issue to the ICC, see Micheli v. Director, OWCP, 846 F.2d 632, 635 (10th Cir. 1988), or the district court, see Lyons v. Jefferson Bank Trust, 994 F.2d 716, 721 (10th Cir. 1993), but also because that exemption is expressly available only to railroads and is not self-executing, Exemption of Out of Service Rail Lines, 366 I.C.C. 885, 1983 WL 28009 (I.C.C.), at *4-5 (June 3, 1983); see also 49 C.F.R. § 1152.50(d).

The judgment of the United States District Court for the District of Colorado is AFFIRMED. Defendants' motion to file a surreply brief is DENIED as moot.