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John A. Weeks III
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Highways, Byways, And Bridge Photography
Moose Line Road Bridge
NF-130 Saint Louis River Highway Crossing
Hoyt Lakes, MN

Moose Line Road Bridge

• Structure ID: NBI: 090901000001007
• Location: River Mile 168.0
• River Elevation: 1,464 Feet
• Highways: NF-130
• Daily Traffic Count: 52 (1990)
• Bridge Type: Steel Girder, Concrete Deck
• Bridge Length: 61 Feet, 61 Foot Longest Span
• Bridge Width: 24 Feet, 2 Lanes
• Navigation Channel Width: Non-Navigable
• Height Above Water: 8 Feet
• Date Built: Built 1958, Reconstructed 2006
Moose Line Road, also known as National Forest Road #130, is the main north-south forest road though the western part of the Superior National Forest. The road appears to be upgraded from an old logging road or logging railroad. It is well graded and features a relatively smooth gravel surface. The road is used for a snowmobile trail in the winter months.

The bridge is a very simple structure. It is built by placing large metal I-beams across the gap between the abutments. The gaps between the beams are filled in with plywood supported from the bottom, resulting in a flat smooth surface. Workers then poured a six-inch thick concrete deck over the beams. To finish off the ridge, steel railings are attached to the edge of deck. While this construction method is a little too light duty for a US-highway or Interstate highway, it is perfect for low traffic situations that supports very little truck traffic.

The Saint Louis River is very interesting looking at this location. The riverbed is filled with large black rocks. The water flows between the rocks and is only rarely visible. The result is that the river looks like a large lava flow, much like what one might see in Hawaii or the desert southwest.

The photo above is looking south down the center of the Moose Line Road Bridge. The photo below is looking southeast across the bridge deck from the northwest corner of the structure.

Moose Line Road Bridge
Moose Line Road Bridge
The photo above is looking downstream to the west from the deck of the Moose Line Bridge. The concentration of black rocks in the river channel almost hides the fact that this is a river. The photo below is the downstream west face of the bridge. Between the thick greenery, steep banks along the road, and rocky terrain, it is difficult to get a profile view of this structure.

Moose Line Road Bridge
Moose Line Road Bridge
These two photos, and the six that follow, are from July, 2011. I am not sure if they add much to the story, but there was a bridge and a blue sky day, so I couldn't pass it up. The photo above is a very similar view to the photo at the top of the page, but it is framed a little bit better. Likewise for the photo below, it is similar to the second photo from the top. Both are looking north down the length of the bridge deck.

Moose Line Road Bridge
Moose Line Road Bridge
The photo above is looking north along the east face of the bridge, while the photo below is looking south along the east face of the structure. The trees and brush have been cut back from along the bridge. It looks like this was part of an overall maintenance upgrade to Moose Line Road that was funded by government stimulus money.

Moose Line Road Bridge
Moose Line Road Bridge
The photo above is looking upstream to the east from the bridge deck, while the photo below is looking downstream to the west. Note the only the tops of a few rocks are visible compared to the downstream photo above from a few years ago. Heavy rains have caused high water levels. The water here appears to be about three feet above normal.

Moose Line Road Bridge
Moose Line Road Bridge
These two photos are views looking downstream to the west from the north river bank. The photo above is from near the northeast bridge abutment, while the photo below is from about 200 feet upstream.

Moose Line Road Bridge

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