4 MI RD over I-75

Map

Coordinates:
+44.59846, -84.70898
44°35'54" N, 84°42'32" W

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	4 MI RD over I-75
Structure number:	000000000002034
Old structure number:	20120014000S020 `(from 1992 edition)`
Location:	4.0 MI S OF GRAYLING
Purpose:	Carries highway over highway
Route classification:	Major Collector (Rural) `[07]`
Length of largest span:	71.9 ft. `[21.9 m]`
Total length:	212.0 ft. `[64.6 m]`
Roadway width between curbs:	26.9 ft. `[8.2 m]`
Deck width edge-to-edge:	30.8 ft. `[9.4 m]`
Vertical clearance below bridge:	13.1 ft. `[4.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	1961
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 18+Mod / HS 20+Mod `[6]`
Number of main spans:	4
Main spans material:	Steel `[3]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Latex Concrete or similar additive `[3]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	180 `[as of 1974]`
Deck condition:	Fair `[5 out of 9]`
Superstructure condition:	Good `[7 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Equal to present minimum criteria `[6]`
Deck geometry appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Underclearances appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Roadway alignment appraisal:	Equal to present minimum criteria `[6]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	91.9

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
March 2018	Fair	Fair	Good	Satisfactory	180	91.9
March 2016	Fair	Fair	Good	Satisfactory	180	91.9
April 2014	Fair	Satisfactory	Good	Satisfactory	180	92.9
April 2012	Fair	Satisfactory	Good	Satisfactory	180	92.9
February 2011	Fair	Satisfactory	Good	Satisfactory	180	92.9
February 2009	Fair	Satisfactory	Good	Satisfactory	180	92.9
February 2007	Fair	Satisfactory	Good	Satisfactory	180	92.9
February 2005	Fair	Satisfactory	Good	Fair	180	82.8
February 2003	Fair	Satisfactory	Good	Fair	180	81.8
February 2001	Fair	Satisfactory	Good	Satisfactory	180	92.9
August 1999	Fair	Satisfactory	Good	Satisfactory	180	94.9
August 1997	Fair	Fair	Good	Satisfactory	180	88.8
September 1995	Fair	Satisfactory	Good	Satisfactory	180	89.8
June 1993	Fair	Satisfactory	Good	Satisfactory	180	89.8
April 1991	Fair	Satisfactory	Good	Satisfactory	180	89.8

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Steel Girder/Beam	linear ft.	1,272	840	432	0	0
Steel Protective Coating	sq. ft.	10,588	10,588	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	6,572	4,382	2,190	0	0
Substructure
Reinforced Concrete Column	each	9	6	3	0	0
Concrete Protective Coating	sq. ft.	829	829	0	0	0
Reinforced Concrete Abutment	linear ft.	114	108	0	6	0
Concrete Protective Coating	sq. ft.	285	285	0	0	0
Reinforced Concrete Pier Cap	linear ft.	96	66	30	0	0
Concrete Protective Coating	sq. ft.	52,800	52,800	0	0	0
Joints
Strip Seal Joint	linear ft.	78	78	0	0	0
Pourable Joint	linear ft.	52	52	0	0	0
Bearings
Movable Bearing	each	24	0	24	0	0
Fixed Bearing	each	24	9	15	0	0
Bridge Rail
Reinforced Concrete Bridge Rail	linear ft.	424	321	103	0	0
Concrete Protective Coating	sq. ft.	2,544	2,544	0	0	0