FM 580 over SLOUGH


+31.11949, -98.51699
31°07'10" N, 98°31'01" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:FM 580 over SLOUGH
Structure number:231410023115049
Location:1.80 MI N OF SAN SABA C/L
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:4.9 ft. [1.5 m]
Total length:23.0 ft. [7.0 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:27.2 ft. [8.3 m]
Owner:State Highway Agency [01]
Year built:1953
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:M 18 / H 20 [4]
Number of main spans:4
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: January 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:310 [as of 2013]
Truck traffic:16% of total traffic
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:86.5
Recommended work:Other structural work, including hydraulic replacements. [38]
Estimated cost of work:$1,000

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
January 2018Good7 out of 1031086.5
January 2016Good7 out of 1031086.5
January 2014Good7 out of 1033086.4
January 2012Good7 out of 1034086.4
October 2009Good7 out of 1038076.3
October 2007Good7 out of 1045076.1
November 2005Good7 out of 1045076.1
October 2003Good7 out of 1045075.7
September 2001Good7 out of 1045075.8
February 2000Good7 out of 1041075.9
June 1998Good7 out of 1033068.5
May 1996Good8 out of 1033085.8
April 1992Good8 out of 1032096.1
May 1988Good8 out of 1045095.8