Structure 120850160701016 · Galveston County, TX

FM 1764 EB over Drainage Ditch No 7b

Carries FM 1764 EB over Drainage Ditch No 7b, 0.70 Mi W Of SH 146.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT125 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

125 ft end to end, longest span 42 ft. 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.

Built198937 years old
Length125.0 ft38.1 m
Daily traffic16,141counted 2023
Last inspectedAugust 2024every 24 months

Location

StateTexas
CountyGalveston
Location0.70 Mi W Of SH 146
CarriesFM 1764 EB
CrossesDrainage Ditch No 7b
Coordinates29.39558, -94.96317

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length125.0 ft (38.1 m)
Max Span42.0 ft (12.8 m)
Deck Width49.5 ft (15.1 m)
Deck Area575.3 sq m
Main Spans3
Year Built1989

Traffic

Avg Daily Traffic16,141 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number120850160701016

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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