+39.47713, -103.95343
39°28'38" N, 103°57'12" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 40 ML over AGATE CREEK
Structure number:G-21-A
Location:.4 MI W. OF AGATE
Purpose:Carries highway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:23.0 ft. [7.0 m]
Total length:93.5 ft. [28.5 m]
Roadway width between curbs:28.9 ft. [8.8 m]
Deck width edge-to-edge:29.9 ft. [9.1 m]
Owner:State Highway Agency [01]
Year built:1931
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:M 13.5 / H 15 [2]
Number of main spans:4
Main spans material:Wood or timber [7]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Bituminous [6]

Latest Available Inspection: March 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:90 [as of 2011]
Truck traffic:8% of total traffic
Deck condition:Satisfactory [6 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:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present desirable criteria [8]
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]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:70.2
Estimated cost of work:$152,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017FairSatisfactorySatisfactoryFair9070.2
March 2015FairSatisfactorySatisfactoryFair9070.2
March 2013FairSatisfactorySatisfactoryFair9070.2
March 2011FairSatisfactorySatisfactoryFair9070.2
February 2009FairSatisfactorySatisfactoryFair9070.2
March 2007FairSatisfactorySatisfactoryFair12070.2
February 2005FairSatisfactorySatisfactoryFair12270.2
February 2003FairSatisfactorySatisfactoryFair14370.2
January 2001FairSatisfactorySatisfactoryFair7469.8
March 1999FairSatisfactorySatisfactoryFair7469.8
January 1997FairSatisfactorySatisfactoryFair10069.8
March 1995FairSatisfactorySatisfactorySatisfactory10079.9
January 1993FairSatisfactorySatisfactorySatisfactory10090.7
February 1992FairSatisfactoryFairSatisfactory13079.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Timber Girder/Beamlinear ft.1,2881,035230023
Timber Columneach1850130
Reinforced Concrete Abutmentlinear ft.60481020
Timber Pier Caplinear ft.1741403400
Timber Decksq. ft.2,8052,805000
Wearing Surfacessq. ft.2,8052,60520000
Bridge Rail
Timber Bridge Raillinear ft.1880174140