Structure 180570237401597 · Dallas County, TX

IH 635 EB Ml over IH 635 Texpress EB

Carries IH 635 EB Ml over IH 635 Texpress EB, 0.21 Mi NE Of Marsh LN.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,516 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

2,516 ft end to end, longest span 115 ft: about 7.0 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.

Built201412 years old
Length2516.1 ft766.9 m
Daily traffic—reported figure implausible
Last inspectedJune 2023every 48 months

Location

StateTexas
CountyDallas
Location0.21 Mi NE Of Marsh LN
CarriesIH 635 EB Ml
CrossesIH 635 Texpress EB
Coordinates32.92039, -96.84999

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length2516.1 ft (766.9 m)
Max Span115.2 ft (35.1 m)
Deck Width40.0 ft (12.2 m)
Deck Area9356.2 sq m
Main Spans26
Year Built2014

Traffic

Avg Daily Traffic130,485 (2023)
That is about 65,242 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180570237401597

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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