SH 146 NB over HOUSTON SHIP CHANNEL

Map 

Facts 

Name:	SH 146 NB over HOUSTON SHIP CHANNEL
Structure number:	121020038912089
Location:	0.6 MI N OF SH 225
Purpose:	Carries highway over waterway
Route classification:	Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:	1250.1 ft. [381.0 m]
Total length:	10462.5 ft. [3188.8 m]
Roadway width between curbs:	71.9 ft. [21.9 m]
Deck width edge-to-edge:	75.5 ft. [23.0 m]
Vertical clearance below bridge:	174.9 ft. [53.3 m]
Owner:	State Highway Agency [01]
Year built:	1995
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Design load:	MS 18 / HS 20 [5]
Main span material:	Steel [3]
Main span design:	Suspension [13]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) [1]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	31,350 [as of 2008]
Truck traffic:	12% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
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]
Pier/abutment protection:	Navigation protection not required [1]
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:	48.8 tons [44.4 metric tons]
Inventory rating:	36.0 tons [32.7 metric tons]
Sufficiency rating:	75.0

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	10 [as of 2000]
Deck condition:	Good [7 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Good [7 out of 9]
Channel protection:	There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
Pier/abutment protection:	Navigation protection not required [1]
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:	48.5 tons [44.1 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Sufficiency rating:	94.9

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