Arkansas Hwy 177 over Norfork Dam Spillway


+36.24833, -92.23778
36°14'54" N, 92°14'16" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Arkansas Hwy 177 over Norfork Dam Spillway
Structure number:AHTD000000M3875
Location:13 MI SE of Mountain Home
Purpose:Carries highway over relief for waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:47.6 ft. [14.5 m]
Total length:575.8 ft. [175.5 m]
Roadway width between curbs:25.6 ft. [7.8 m]
Deck width edge-to-edge:42.0 ft. [12.8 m]
Owner:Corps of Engineers (Civil) [70]
Year built:1944
Year reconstructed:2008
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:12
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: August 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:1,800 [as of 2016]
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:67.1
Recommended work:Other structural work, including hydraulic replacements. [38]
Estimated cost of work:$825,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2017FairGoodSatisfactoryFair180067.1
August 2015FairGoodSatisfactoryFair20078.0
July 2013FairGoodSatisfactoryFair200066.3
August 2011FairVery GoodSatisfactoryFair200066.3
July 2009GoodVery GoodGoodGood200078.8
August 2003FairFairGoodGood150079.2
August 2001FairFairGoodGood140079.5
July 1999FairFairGoodGood220074.9
July 1997GoodGoodVery GoodVery Good210076.3
July 1995GoodGoodVery GoodVery Good201076.6
July 1993GoodGoodVery GoodVery Good191079.1