+42.63119, -84.62310
42°37'52" N, 84°37'23" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:M-99 SB over GRAND RIVER
Structure number:000000000002305
Old structure number:23123092000B030 (from 1992 edition)
Location:0.5 MI S OF HOLT RD
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:60.0 ft. [18.3 m]
Total length:180.1 ft. [54.9 m]
Roadway width between curbs:42.0 ft. [12.8 m]
Deck width edge-to-edge:45.9 ft. [14.0 m]
Skew angle:33°
Owner:State Highway Agency [01]
Year built:1978
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Epoxy Overlay [5]

Latest Available Inspection: May 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:4,238 [as of 2007]
Truck traffic:4% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Equal to present desirable criteria [8]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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 is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:88.0 tons [80.0 metric tons]
Inventory rating:52.8 tons [48.0 metric tons]
Sufficiency rating:99.6
Recommended work:Bridge deck replacement with only incidental widening. [37]
Estimated cost of work:$51,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201599.6FairSatisfactoryGoodGood-4238
May 201399.6FairSatisfactoryGoodGood-4238
May 201199.6FairSatisfactoryGoodGood-4238
May 200999.6FairSatisfactoryGoodGood-4238
September 200899.6FairSatisfactoryGoodGood-4238
May 200799.5FairSatisfactorySatisfactorySatisfactory-4918
May 200599.6FairSatisfactorySatisfactorySatisfactory-4150
May 200386.3FairSatisfactoryFairSatisfactory-4150
May 200197.4FairSatisfactoryGoodSatisfactory-4150
August 199999.4FairSatisfactoryGoodSatisfactory-4150
November 199799.4FairSatisfactoryGoodSatisfactory-4150
July 199599.6FairSatisfactoryGoodSatisfactory-3000
October 199399.6FairSatisfactoryGoodSatisfactory-3000
July 199199.6FairGoodGoodSatisfactory-3000
June 198999.6FairSatisfactoryGoodSatisfactory-3000