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BLACKWELLSMILLS RD over MILLSTONE RIVER

Somerset County, New Jersey

Map

Coordinates:
+40.47472, -74.57617
40°28'29" N, 74°34'34" W

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Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	BLACKWELLSMILLS RD over MILLSTONE RIVER
Structure number:	18G0404
Location:	AT RIVER RD INTERSECTION
Purpose:	Carries highway and pedestrian walkway over waterway
Route classification:	Local (Urban) `[19]`
Length of largest span:	53.2 ft. `[16.2 m]`
Total length:	108.9 ft. `[33.2 m]`
Roadway width between curbs:	30.2 ft. `[9.2 m]`
Deck width edge-to-edge:	38.1 ft. `[11.6 m]`
Skew angle:	5°
Owner:	County Highway Agency `[02]`
Year built:	1994
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 18+Mod / HS 20+Mod `[6]`
Number of main spans:	2
Main spans material:	Steel continuous `[4]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Latest Available Inspection: October 2017

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	4,280 `[as of 2017]`
Truck traffic:	1% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Very Good `[8 out of 9]`
Substructure condition:	Good `[7 out of 9]`
Structural appraisal:	Better than present minimum criteria `[7]`
Deck geometry appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Water adequacy appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Roadway alignment appraisal:	Better than present minimum criteria `[7]`
Channel protection:	Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. `[6]`
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. `[8]`
Sufficiency rating:	77.2

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
October 2017	Fair	Satisfactory	Very Good	Good	4280	77.2
October 2015	Fair	Satisfactory	Very Good	Good	4990	75.7
December 2013	Fair	Satisfactory	Very Good	Good	4978	75.7
December 2011	Fair	Satisfactory	Very Good	Good	9880	73.4
December 2009	Fair	Satisfactory	Very Good	Good	4682	79.3
December 2007	Good	Good	Very Good	Good	4682	79.3
December 2005	Good	Good	Very Good	Good	4590	79.4
November 2003	Good	Very Good	Very Good	Good	4500	79.4
December 2001	Good	Very Good	Very Good	Very Good	4410	80.4
December 1999	Good	Very Good	Very Good	Very Good	4326	80.5
December 1997	Good	Very Good	Very Good	Very Good	4326	80.5
September 1997	Good	Very Good	Very Good	Very Good	4200	80.5
June 1995	Good	Very Good	Excellent	Very Good	4200	81.4
June 1994	Good	Very Good	Excellent	Very Good	4200	81.4
April 1991	Poor	Fair	Poor	Poor	2880	5.3

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Steel Girder/Beam	linear ft.	742	742	0	0	0
Steel Protective Coating	sq. ft.	742	742	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	4,133	0	4,133	0	0
Substructure
Reinforced Concrete Pier Wall	linear ft.	45	30	15	0	0
Reinforced Concrete Abutment	linear ft.	90	82	8	0	0
Bearings
Elastomeric Bearing	each	21	21	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	218	0	218	0	0
Steel Protective Coating	sq. ft.	654	0	654	0	0

© Copyright 2012-20, James Baughn
Disclaimer: All data is taken from the National Bridge Inventory and has not been verified.
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