Structure 150150B21985011 · Bexar County, TX

W Martin ST over Alazan Creek

Carries W Martin ST over Alazan Creek, 0.05 Mi W Of San Jacinto.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT174 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

174 ft end to end, longest span 36 ft: about 2 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 slab bridge.

Built196462 years old
Length173.9 ft53 m
Daily traffic2,939counted 2020
Last inspectedMay 2023every 24 months

Location

StateTexas
CountyBexar
Location0.05 Mi W Of San Jacinto
CarriesW Martin ST
CrossesAlazan Creek
Coordinates29.43111, -98.51602

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length173.9 ft (53 m)
Max Span36.1 ft (11 m)
Deck Width52.2 ft (15.9 m)
Deck Area842.7 sq m
Main Spans5
Year Built1964

Traffic

Avg Daily Traffic2,939 (2020)
Truck Traffic1%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number150150B21985011

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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