Structure 150150245201281 · Bexar County, TX

Lp 1604 Sbml over Marbach Rd.

Carries Lp 1604 Sbml over Marbach Rd., 1.53 Mi N Of US 90.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT420 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

420 ft end to end, longest span 140 ft: about 6 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.

Built20197 years old
Length419.9 ft128 m
Daily traffic16,200counted 2020
Last inspectedJuly 2022every 48 months

Location

StateTexas
CountyBexar
Location1.53 Mi N Of US 90
CarriesLp 1604 Sbml
CrossesMarbach Rd.
Coordinates29.40306, -98.70694

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length419.9 ft (128 m)
Max Span140.1 ft (42.7 m)
Deck Width47.9 ft (14.6 m)
Deck Area1868.8 sq m
Main Spans3
Year Built2019

Traffic

Avg Daily Traffic16,200 (2020)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJuly 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number150150245201281

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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