Structure 1805709K4800006 · Dallas County, TX

Walnut Hill LN over Dart Blue Line

Carries Walnut Hill LN over Dart Blue Line, 0.25 Mi E Of Skillman ST.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT140 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

140 ft end to end, longest span 50 ft. 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.

Built197254 years old
Length140.1 ft42.7 m
Daily traffic22,744counted 2019
Last inspectedDecember 2022every 48 months

Location

StateTexas
CountyDallas
Location0.25 Mi E Of Skillman ST
CarriesWalnut Hill LN
CrossesDart Blue Line
Coordinates32.87865, -96.73065

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length140.1 ft (42.7 m)
Max Span49.9 ft (15.2 m)
Deck Width91.9 ft (28 m)
Deck Area1195.6 sq m
Main Spans3
Year Built1972

Traffic

Avg Daily Traffic22,744 (2019)
Lanes On Bridge6

Inspection & Ownership

Last InspectionDecember 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number1805709K4800006

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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