BNSF Through Truss in N Scale

A bridge in Sioux City IA was the prototype for a bridge over an aisle in my layout room.

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Bashing Kato truss bridges for the approach bridge.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Bashing Kato truss bridges for the approach bridge.

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469
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23 Sep 2012
Pier before adding track wire and pouring plaster. Brass contacts on top of the pier and under the bridge shoes provide track power.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Pier before adding track wire and pouring plaster. Brass contacts on top of the pier and under the bridge shoes provide track power.

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328
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23 Sep 2012
Pier mid pour. The approaches were added after the bridge was located on the piers.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
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Pier mid pour. The approaches were added after the bridge was located on the piers.

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275
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23 Sep 2012
Deck detail on the bridge before painting.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
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Deck detail on the bridge before painting.

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254
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23 Sep 2012
Step 4 - gluing the side chords to the road bed.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
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Step 4 - gluing the side chords to the road bed.

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291
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23 Sep 2012
Step 6- floor beams and stringers.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
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Step 6- floor beams and stringers.

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301
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23 Sep 2012
After gluing the side trusses to the bed, the sway struts, sway braces, and top laterals were added in step 5. These were made in matched pairs that got higher toward the bridge center.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

After gluing the side trusses to the bed, the sway struts, sway braces, and top laterals were added in step 5. These were made in matched pairs that got higher toward the bridge center.

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276
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23 Sep 2012
Step 3 - Side trusses (matching pairsm) are built up on the drawing. The bottom chord is continuous, 426 feet long. In N scale it comes out to 32 inches in the layout room. I used a four foot level for a straight edge and build it on a glass sheet for flatness.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Step 3 - Side trusses (matching pairsm) are built up on the drawing. The bottom chord is continuous, 426 feet long. In N scale it comes out to 32 inches in the layout room. I used a four foot level for a straight edge and build it on a glass sheet for flatness.

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272
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23 Sep 2012
step 2 - Road bed buildup
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

step 2 - Road bed buildup

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284
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23 Sep 2012
Bridge hunter and John Weeks are good sites to find a bridge that is the length you want. This one was the right length to span the aisle in my trainroom, single track, and no lattice work (1980's bridge). Wandering up the Ohio and Missouri on Google Earth works well too. This particular BNSF bridge in Sioux City IA has a very detailed view on Google Earth, and the overall horizontal dimensions wre taken from the ruler tool on that site.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Bridge hunter and John Weeks are good sites to find a bridge that is the length you want. This one was the right length to span the aisle in my trainroom, single track, and no lattice work (1980's bridge). Wandering up the Ohio and Missouri on Google Earth works well too. This particular BNSF bridge in Sioux City IA has a very detailed view on Google Earth, and the overall horizontal dimensions wre taken from the ruler tool on that site.

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276
0
0
23 Sep 2012
Step 1 - get photos from internet. These plus google earth were used to create drawings. Good sources included johnweeks.com and flickr. The depth markings on the pier provided the vertical scale.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Step 1 - get photos from internet. These plus google earth were used to create drawings. Good sources included johnweeks.com and flickr. The depth markings on the pier provided the vertical scale.

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269
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23 Sep 2012
74720179 kVLvKl2X
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

74720179 kVLvKl2X

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273
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23 Sep 2012
Finished approach bridge.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Finished approach bridge.

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263
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28 Apr 2012
Finished bridge
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Finished bridge

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279
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0
28 Apr 2012
Finished bridge
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Finished bridge

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263
0
0
28 Apr 2012
Finished bridge
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Finished bridge

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902
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0
28 Apr 2012
Bridge spans an aisle.
NtheBasement

NtheBasement

BNSF Through Truss in N Scale
0 x

Bridge spans an aisle.

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290
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28 Apr 2012
NtheBasement, Sep 23, 2012
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