Structure 180570000911518 · Dallas County, TX

Ih30wb To Ih635sb over IH 635 & IH 30

Carries Ih30wb To Ih635sb over IH 635 & IH 30, Ih30 & IH 635 Interchange.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure9/9 · Excellent
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,878 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 9/9Substructure 8/9

2,878 ft end to end, longest span 248 ft: about 8.0 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.

Built20233 years old
Length2878.0 ft877.2 m
Daily traffic29,000counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyDallas
LocationIh30 & IH 635 Interchange
CarriesIh30wb To Ih635sb
CrossesIH 635 & IH 30
Coordinates32.82327, -96.62956

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2878.0 ft (877.2 m)
Max Span248.0 ft (75.6 m)
Deck Width38.1 ft (11.6 m)
Deck Area10175.5 sq m
Main Spans4
Year Built2023

Traffic

Avg Daily Traffic29,000 (2022)
Truck Traffic15%
Lanes On Bridge2
Lanes Under Bridge12

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 Number180570000911518

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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