Structure 210310003907209 · Cameron County, TX

US 77 SB over Spur 54

Carries US 77 SB over Spur 54, 1.10 Mi S Of FM 2994.

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 FT260 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

260 ft end to end, longest span 90 ft: about 4 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.

Built197155 years old
Length259.8 ft79.2 m
Daily traffic19,955counted 2023
Last inspectedMarch 2023every 48 months

Location

StateTexas
CountyCameron
Location1.10 Mi S Of FM 2994
CarriesUS 77 SB
CrossesSpur 54
Coordinates26.19541, -97.71992

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length259.8 ft (79.2 m)
Max Span89.9 ft (27.4 m)
Deck Width44.3 ft (13.5 m)
Deck Area1069.2 sq m
Main Spans2
Year Built1971

Traffic

Avg Daily Traffic19,955 (2023)
Truck Traffic19%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number210310003907209

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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