Structure 180570237407343 · Dallas County, TX

IH 635 EB over Dart Rr & County Line RD

Carries IH 635 EB over Dart Rr & County Line RD, 8.3 Mi W Of IH 35e.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
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 FT473 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

473 ft end to end, longest span 85 ft: about 7 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.

Built1979rebuilt 2020
Length473.1 ft144.2 m
Daily traffic47,751counted 2020
Last inspectedAugust 2023every 48 months

Location

StateTexas
CountyDallas
Location8.3 Mi W Of IH 35e
CarriesIH 635 EB
CrossesDart Rr & County Line RD
Coordinates32.94712, -97.02832

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length473.1 ft (144.2 m)
Max Span85.0 ft (25.9 m)
Deck Width81.4 ft (24.8 m)
Deck Area3576.2 sq m
Main Spans6
Year Built1979 (reconstructed 2020)

Traffic

Avg Daily Traffic47,751 (2020)
Truck Traffic9%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180570237407343

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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