Structure 120850005103071 · Galveston County, TX

SH 3 SB over SH 146

Carries SH 3 SB over SH 146, 0.70 Mi NW Of Lp 197.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT375 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

375 ft end to end, longest span 90 ft: about 5 semi-trucks nose to tail. 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.

Built196957 years old
Length375.0 ft114.3 m
Daily traffic1,600counted 2013
Last inspectedAugust 2022every 48 months

Location

StateTexas
CountyGalveston
Location0.70 Mi NW Of Lp 197
CarriesSH 3 SB
CrossesSH 146
Coordinates29.34428, -94.93860

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length375.0 ft (114.3 m)
Max Span89.9 ft (27.4 m)
Deck Width38.1 ft (11.6 m)
Deck Area1325.9 sq m
Main Spans4
Year Built1969

Traffic

Avg Daily Traffic1,600 (2013)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionAugust 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number120850005103071

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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