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Details for Benchmark: LO0556

N 40° 46.100 W 111° 54.200 (NAD 83)

Altitude: 4263.59

Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)

Location:
In SALT LAKE county, UT View Original Datasheet
Designation:
4260.840
Marker Type:
bolt
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Must Read!

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The bolt in the middle of the 9" x 9" plate is the actual GS&CGS benchmark.

[Photos:]
photo4260.840
Close up view
photo4260.840
Monument view
photo4260.840
Horizon view facing west

Found during USA trip with Trebbi.
Thanks for showing us this place!

Found during USA trip with ErikSi.
Thanks for showing us this place!

Trebbi

Saw this unique benchmark while caching in the area.

[Photos:]
photoLO0556

I had to go looking for this twice before I found it completely hidden under a plant in front of the Old Union Station building. At first I followed the GPSr to the listed coords, ending up inside the Dick's Sports extravaganza. After checking some of the previous logs and photos, I went back, hunted under the plant and found the bolt. Both monuments here are interesting. The monument is set in the top of a square monument, approximately 14 x 14 inches which projects about 4 inches above ground level in the planter at N 40 46.162 W 111 54.164 which is 412 feet at 24 degrees True from the coordinates listed.
edexter

This entry was edited by edexter on Wednesday, 27 May 2015 at 14:44:59 UTC.

[Photos:]
photoUnion Pacific Station facade
photoThe other monument
photoMark is hiding under this bush
photoTranscontinental Railroad Detail

Found it when in the area.

[Photos:]
photoLO0556

Recovered in good condition according to 1997 notes. This is currently in front of the Union Pacific station.

[Photos:]
photo4260.840 plaque with bolt point in middle
photo4260.840 monument projecting from planter
photo4260.840 area beside other monument in planter

Found on our last trip to Salt Lake City over Thanksgiving. In front of the old Union Pacific Station, now part of the Gateway Mall.

[Photos:]
photoLO0556 4260.840
Benchmark at the Union Pacific Station. Bolt benchmark is in the center of the plaque.

Found in good shape

[Photos:]
photoIMG_20130906_084853

Found while Geocaching nearby!

Found in great shape

[Photos:]
photobolt
photobolt

This is the first bolt I have see with a plaque mounted around the bolt. The old RR Depot is also quite impressive.

Found this nice benchmark and took a picture.

[Photos:]
photo1-29-2011 Waymark 125

Found this one on our walk through SLC. Nice one!

[Photos:]
photobench2

Well came back from the geocache at the Triad Center down the street, and accidently found this. Once it said "Benchmark, I knew exactly what to do so I am logging it. Nice shape the disk is in

This one is extremely difficult when they cover the planter with a sheet to protect the flowers.

[Photos:]
photothe plaque

Found while geocaching.

We visited the Gateway Mall this evening and figured we would grab this Benchmark too.

Found while geocaching

Easy find first bench mark for us

Found this benchmark while on a quest to photograph important surveying monuments in Utah.

Cache ON!

Utahbill

Found with Susan55115

[Photos:]
photoC:\Temp\LO0556.JPG
photoC:\Temp\LO0556A.JPG

Found with DCJ. Took a little while as it placed us down the block. I took a photo of the Lights the night before not knowing the bolt was there below the "The Gateway" lights. DCJ's photo shows the plaque which is actually in the flower bed horizontal below the other historical plaque(which is on the stone).

[Photos:]
photoThe Gateway
bolt just at entry way.

Found it, waymarked it. http://www.waymarking.com/wm/details.aspx?f=1&guid=e3b1bb69-ac44-48e6-9857-70bc7140b20c&gid=2

Got this while grabbing some caches.

[Photos:]
photoLO0556

Sam and I found this one by chance while on holiday from the UK. It triggered in my mind that Benchmaking is an additional part of the Geocaching sport in the US. From now on I'll look out for these and log a few more before returning home.

Never found any benchmarks until now. It was really interesting reading about the railroad on a nearby board.

[Photos:]
photoMarker

Found this weekend while in the downtown area caching.

Grabbed a cache today and then went after some benchmarks!

Found this after watching a nice IMAX film at the Clark Planetarium with the wife and some friends.

My wife and I found this one while walking back from the Clark Planetarium.

Found it on my lunch. Also set the Alt. on my watch by it.
Still in great shape.

DprCprs

Its Still There

[Photos:]
photoBenchmark and GPS

Found this one with Dan@DBC.

Best cap and bolt to-date also!

[Photos:]
photocap, bolt,GPS

In town on business over at the Triad Center. Just happened to be poking around reading brass plaques not really looking for benchmarks.

[Photos:]
photoBolt
photoDepot

Found it in the flowers and as described earlier. A unique monument and neat old station.

[Photos:]
photo4260.840 - Salt Lake City, UT
photo4260.840 - RR Historical Marker - SLC, UT
photo4260.840 - Union Pacific Station - SLC, UT
N 40° 46.159 W 111° 54.158

Easily found and in excellent condition. My GPSr unit was giving an EPE of 75', probably due to the large Union Pacific building, so take my listed coordinates for what they are.

It's probably easier to find this by the English-language description, however. Look for a big concrete box planter in front of the East main entrance to the railroad building (the planter is directly underneath the sign that says 'The Gateway'). The planter has two monuments, actually--this one, and a D.U.P. monument, which is more visible from the sidewalk.

I walk by here all the time.

Sometimes we never notice these things that are all around us. I love this stuff.

N 40° 46.159 W 111° 54.163

Found in good condition exactly as described in Official History 1997 by NGS. The original coordinates listed were off by about 398 feet to the south, however.
--Olystats

[Photos:]
photoBenchmark LO0556
Bronze plaque in flower planter box directly in front of Union Pacific railroad station at intersection of South Temple and 400 West, Salt Lake City, Utah.
photoUnion Pacific Monument
Historical Monument to right of benchmark LO0556 in front of Union Pacific Station, SLC.
photoUnion Pacific Station-SLC
Looking west at front of Union Pacific Station, Salt Lake.

Documented History (by the NGS)

Unknown by (MONUMENTED)
01/01/1953 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1953 IN SALT LAKE CITY. AT SALT LAKE CITY, 0.1 MILE SOUTH ALONG THIRD WEST STREET FROM THE INTERSECTION OF NORTH TEMPLE STREET, AT THE UNION PACIFIC DEPOT, 32.4 FEET SOUTHEAST OF THE CENTER OF THE NORTH ENTRANCE ON THE EAST SIDE OF THE BUILDING, 26.5 FEET NORTHEAST OF THE CENTER OF THE SOUTH ENTRANCE ON THE EAST SIDE OF THE BUILDING, 14.7 FEET EAST OF THE EAST WALL OF THE BUILDING, 12.8 FEET WEST OF THE WEST CURB OF THE PASSENGER LOADING ZONE, AND IN THE TOP OF THE CENTER OF A 9- BY 9-INCH BRONZE PLATE ON THE TOP OF A 14- BY 14-INCH CONCRETE POST PROJECTING 2.5 FEET ABOVE THE CONCRETE SIDEWALK. NOTE-- THE FOLLOWING WORDS AND NUMBERS ARE CAST IN THE BRONZE PLATE-- UNITED STATES BENCH MARK ELEVATION 4260.840 FEET ABOVE MEAN SEA LEVEL GREAT SALT LAKE IS ABOUT 55 FEET LOWER THAN THIS MARK GEOLOGICAL SURVEY AND COAST AND GEODETIC SURVEY.
01/01/1970 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 RECOVERED IN GOOD CONDITION.
07/29/1995 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (ALG) THE STREETS IN SALT LAKE CITY HAVE BEEN RENAMED. 400 WEST SHOULD BE USED INSTEAD OF 3RD WEST.
09/22/1997 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (GAS) IN SALT LAKE CITY, AT THE INTERSECTION OF SOUTH TEMPLE AND 400 WEST STREETS, 16.8 M (55.1 FT) WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF WEST STREET, 8.0 M (26.2 FT) SOUTH OF THE CENTER OF THE NORTH ENTRANCE TO THE UNION PACIFIC RAILROAD STATION, 1.0 M (3.3 FT) ABOVE THE LEVEL OF THE STREETS, ON THE EXTENDED CENTER OF SOUTH TEMPLE STREET, NEAR THE CENTER OF A PLANTER, AND THE MONUMENT PROJECTS 0.4 M (1.3 FT) ABOVE THE GROUND SURFACE. NOTE--THE DATUM POINT IS A BOLT NEAR THE CENTER OF A BRONZE PLAQUE THAT IS ATTACHED TO THE CONCRETE MONUMENT.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in April 2000.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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