+30.50831, -96.73462
30°30'30" N, 96°44'05" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SH 21 over GREENS CREEK
Structure number:170260011602035
Location:1.2 MI E OF FM 908
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:8.9 ft. [2.7 m]
Total length:56.1 ft. [17.1 m]
Skew angle:45°
Owner:State Highway Agency [01]
Year built:1964
Year reconstructed:2006
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Number of main spans:4
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:10,400 [as of 2013]
Truck traffic:10% of total traffic
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:64.2

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
August 2018Fair6 out of 101040064.2
August 2016Fair6 out of 101040063.8
August 2014Fair6 out of 101130075.6
September 2012Good7 out of 101130075.6
September 2008Good7 out of 10910076.8
September 2006Good7 out of 10950076.6
September 2004Good7 out of 10930080.8
October 2002Good7 out of 101170079.6
October 2000Good7 out of 10990078.5
January 1999Good7 out of 10840079.3
May 1997Good7 out of 10720080.0
April 1995Good7 out of 10750087.5
April 1993Good7 out of 10700087.8
October 1989Good8 out of 10770087.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.1,17695021880