Structure 162050037104095 · San Patricio County, TX

US 77 SB over SH 89

Carries US 77 SB over SH 89, US 77 @ SH 89.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT440 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

440 ft end to end, longest span 120 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.

Built200818 years old
Length440.0 ft134.1 m
Daily traffic7,360counted 2016
Last inspectedMarch 2022every 48 months

Location

StateTexas
CountySan Patricio
LocationUS 77 @ SH 89
CarriesUS 77 SB
CrossesSH 89
Coordinates28.05767, -97.50828

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length440.0 ft (134.1 m)
Max Span120.1 ft (36.6 m)
Deck Width40.0 ft (12.2 m)
Deck Area1636.0 sq m
Main Spans4
Year Built2008

Traffic

Avg Daily Traffic7,360 (2016)
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMarch 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number162050037104095

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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