US 31 over DRAINAGE CANAL

Map 

Facts 

Name:	US 31 over DRAINAGE CANAL
Structure number:	009971
Old structure number:	000000035101860 (from 1992 edition)
Location:	1 MI N OF SO. BY PASS
Purpose:	Carries highway over waterway
Route classification:	Other Principal Arterial (Urban) [14]
Length of largest span:	12.1 ft. [3.7 m]
Total length:	50.9 ft. [15.5 m]
Owner:	State Highway Agency [01]
Year built:	1969
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Design load:	M 18 / H 20 [4]
Number of main spans:	4
Main spans material:	Concrete continuous [2]
Main spans design:	Culvert [19]
Deck type:	Not applicable [N]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	14,900 [as of 2008]
Truck traffic:	10% of total traffic
Channel protection:	Bank and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel. [4]
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]
Operating rating:	97.9 tons [89.0 metric tons]
Inventory rating:	71.7 tons [65.2 metric tons]
Sufficiency rating:	99.0
Estimated cost of work:	$2,896,000

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	16,530 [as of 1997]
Truck traffic:	10% of total traffic
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]
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:	Scour calculation/evaluation has not been made. [6]
Operating rating:	33.9 tons [30.8 metric tons]
Inventory rating:	25.0 tons [22.7 metric tons]
Sufficiency rating:	84.2

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	15,090 [as of 1990]
Truck traffic:	10% of total traffic
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:	No noticeable or noteworthy deficiencies which affect the condition of the culvert. Insignificant scrape marks caused by drift. [8]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	33.7 tons [30.6 metric tons]
Inventory rating:	24.8 tons [22.5 metric tons]
Sufficiency rating:	86.9

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