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Details for Benchmark: NJ0546

N 42° 01.850 W 091° 40.050 (NAD 83)

Altitude: 842.7

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

Location:
In LINN county, IA View Original Datasheet
Designation:
X 80 RESET
Marker Type:
bench mark disk
Setting:
abutments and piers of large bridges
Stability:
Probably hold position/elevation well.

Must Read!

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We tied into this BM for a design project we are currently working on. We utilize a different coordinate system for cadastral surveys than you see on GC.com. These coordinates are on Iowa State Plane NAD 83 North Zone coordinate system and have a coordinate value of North 3479706.651 and East 5418901.890 and an elevation of 842.75'. Just in case you were wondering. LOL

The BM is in great shape.

I have ran past this bench mark countless times on training runs and bike rides. I decided that I would stop by and log this one today. Since I had seen it so many times, this was a quick find. All is well here!

[Photos:]
photoNJ0546

Good condition. Disk is between Hwy 100 and Blairs Ferry Rd on SW abutment of Center Point Rd bridge over RR. Walking access via nearby recreational trail.

6-hour OPUS Shared solution, NAD_83(2011)(EPOCH:2010.0000)
LAT: N 42 01 51.32573 pk-pk 0.004 m LON W 091 40 5.39224 pk-pk 0.001 m
EL HGT: 224.800 m pk-pk 0.004 m ORTHO HGT: 256.871 m GEOID12B

Found the geocache nearby and figured I'd pick this us too...

Snapped a picture with my new surveying trackable (will post in the trackable log)...

[Photos:]
photoWith my surveying trackable...

Found this guy real close to a cache I was locating.

At sunset.

[Photos:]
photoHelpers

Found this while doing a nearby cache. The benchmark is in good shape, but the year is hard to read. Coordinates measured as N 42 01.856 / W 091 40.090

[Photos:]
photoNJ0546 NGS Benchmark - X80 Reset

Benchmark is in good shape.

Found while doing adjacent cache

Found with no problems. Some scratches on the benchmark and could not read the year.
Coordinates: N42 01.857 W91 40.090 and it agrees with others that have found this benchmark.

PhotoBill

[Photos:]
photoLocation on Bridge West Wing Wall
photoX80 BenchMark

7:00.p.m. Find #27. First Benchmark. Nice to be able to add another dimension to the sport. We enjoy the history. This one is still in good condition.

[Photos:]
photoFirst Benchmark

Still in good shape.

Ya-Hoo My 1st Bench Mark!
Found this at N42° 01.858 / W91° 40.092
Thank You BlueDeuce!!!

[Photos:]
photoX80 Bench Mark

My First Benchmark

[Photos:]
photoX 80 Reset 2.JPG

nice day. My FIRST Benchmark find!!! WoooHoooo...

[Photos:]
photoX 80 Rest
Center Point RD North of Collins Rd in Cedar Rapids, Iowa 52402

Our first Benchmark! Cool! Used the coords from GeoMarshall421 and Bill93. Found with little trouble once I wiped away some snow! AB-n-AP

[Photos:]
photoOur first Benchmark!

This is my first Benchmark. The coordinates were off by almost 250 feet, the coordinates I got were N42 01.854, 091 40.089

[Photos:]
photoX 80 RESET
found at N42 01.854, W091 40.089

Found it! Been around this bridge alot in the past. I used to know a homeless guy who used to live under it, actually. Went by here today for the bridges of Linn county #6 cache and got this benchmark while I was at it!

[Photos:]
photoMy second benchmak.jpg

The day was cold, rainy, foggy, nasty... and a perfect day to find some caches!!! This was #16 of 18 geocaches, terracaches, and benchmarks today. I took advantage of the weather to work some of the public parks around the area, hoping not to run into too many muggles, and I had a great day!

[Photos:]
photoIMG_6568.JPG
photoIMG_6569.JPG

Found this benchmark while riding on the trail the runs parral to the road.

[Photos:]
photoPhoto0017.jpg
photoPhoto0016.jpg

used Bill 93's cords were within 3 ft. still in good shape after all the construction of the last 2 years in the area

N42:01.856 W91:40.091 (WGS84) indicated accuracy 7 ft.

[Photos:]
photoNJ0546_20041108_A.jpg
photoNJ0546_20041108_C.jpg

N 42° 01.857 W 091° 40.091
Found as described. Located on an older bridge that I suspect will be replaced in the next 25 years.

[Photos:]
photoLooking South - Linn Co Iowa
photoLooking North - Linn Co Iowa
photoWing wall - Linn Co Iowa
photoMark - Linn Co

Documented History (by the NGS)

01/01/1968 by LOCENG (MONUMENTED)
01/01/1969 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1969 AT CEDAR RAPIDS. IN THE NORTHERN PART OF CEDAR RAPIDS (ONCE KNOWN AS LOUISA), 33 FEET LEFT OF THE CENTER LINE AT STATION 152+38.2, SET IN THE TOP OF THE WEST WINGWALL OF BRIDGE NUMBER 265 WHICH CARRIES IOWA HIGHWAY 150 OVER THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS.
03/30/1994 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1994 (RLK) RECOVERED IN GOOD CONDITION. NOTE--TABLET IN SOUTHWEST ABUTMENT OF BRIDGE OVER RAILROAD.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was computed from unverified reset data.
  • The geoid height was determined by GEOID99.

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