Structure 120850005103042 · Galveston County, TX

SH 146 over Sh3/up/tct/gh&h Rr

Carries SH 146 over Sh3/up/tct/gh&h Rr, 1.10 Mi NW Of SH 197.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,001 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9Substructure 4/9 · sets the rating

1,001 ft end to end, longest span 100 ft: about 2.8 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built196858 years old
Length1001.0 ft305.1 m
Daily traffic9,090counted 2013
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyGalveston
Location1.10 Mi NW Of SH 197
CarriesSH 146
CrossesSh3/up/tct/gh&h Rr
Coordinates29.34940, -94.94211

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1001.0 ft (305.1 m)
Max Span100.1 ft (30.5 m)
Deck Width31.2 ft (9.5 m)
Deck Area2898.4 sq m
Main Spans5
Year Built1968

Traffic

Avg Daily Traffic9,090 (2013)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number120850005103042

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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