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Nearby Bridges in NBI 2021: 1


SH 146 NB over HOUSTON SHIP CHANNEL (Route: 146)
Num:121020038912089x
Open: no restriction [A]
Built: 1995, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Steel [3] Suspension [13]
Approach Span(s): Steel [3] Suspension [13]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 3188.8 m = 10462.5 ft
Main Spans: 1 at 381 m = 1250.1 ft
Approach Spans: 66
Skew: 0
Width, Roadway: 21.9 m = 71.9 ft (4 Lanes) and Out-To-Out: 23 m = 75.5 ft for a 25.6 m = 84.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 53.3 m = 174.9 ft
Location
La Porte [41440]: Harris County [201], Texas [48]
Owned by State Highway Agency [01], DOT District: 12
0.6 MI N OF SH 225
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 54.4 metric ton = 59.8 tons (Unknown [A])
Inventory: 32.7 metric ton = 36.0 tons (Unknown [A])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: December 2020 [1220] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 4.5 km = 2.8 mi
Traffic
ADT: 23190 (2013) and Trucks: 8%
Future ADT: 32470 (In 2033 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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