Structure 210310003919291 · Cameron County, TX

US 77/83 E-n Conn over US 77 Bu 83 WB & Sp 54

Carries US 77/83 E-n Conn over US 77 Bu 83 WB & Sp 54, US 77/83 Interchange.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,573 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

3,573 ft end to end, longest span 230 ft: about 9.9 football fields. 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.

Built200224 years old
Length3573.2 ft1089.1 m
Daily traffic6,786counted 2024
Last inspectedFebruary 2023every 24 months

Location

StateTexas
CountyCameron
LocationUS 77/83 Interchange
CarriesUS 77/83 E-n Conn
CrossesUS 77 Bu 83 WB & Sp 54
Coordinates26.19109, -97.71886

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length3573.2 ft (1089.1 m)
Max Span230.0 ft (70.1 m)
Deck Width30.2 ft (9.2 m)
Deck Area10019.7 sq m
Main Spans15
Year Built2002

Traffic

Avg Daily Traffic6,786 (2024)
Lanes On Bridge1
Lanes Under Bridge27

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number210310003919291

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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