Structure 180570004707716 · Dallas County, TX

US 75 NB Fr over US 75 Nbml @twin Sixties

Carries US 75 NB Fr over US 75 Nbml @twin Sixties, Us75 Nbfr At Twin Sixties.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,249 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,249 ft end to end, longest span 194 ft: about 3.5 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 slab bridge.

Built199828 years old
Length1249.0 ft380.7 m
Daily traffic14,524counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyDallas
LocationUs75 Nbfr At Twin Sixties
CarriesUS 75 NB Fr
CrossesUS 75 Nbml @twin Sixties
Coordinates32.84107, -96.77556

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length1249.0 ft (380.7 m)
Max Span193.9 ft (59.1 m)
Deck Width24.6 ft (7.5 m)
Deck Area2855.2 sq m
Main Spans3
Year Built1998

Traffic

Avg Daily Traffic14,524 (2020)
Truck Traffic5%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180570004707716

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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