Structure 1805709M6760002 · Dallas County, TX

Mockingbird Lane over West Lawther DR

Carries Mockingbird Lane over West Lawther DR, 0.5 Mi W Of Buckner BLVD.

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 FT203 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

203 ft end to end, longest span 54 ft: about 3 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.

Built196561 years old
Length203.1 ft61.9 m
Daily traffic21,682counted 2014
Last inspectedFebruary 2023every 24 months

Location

StateTexas
CountyDallas
Location0.5 Mi W Of Buckner BLVD
CarriesMockingbird Lane
CrossesWest Lawther DR
Coordinates32.85222, -96.72923

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length203.1 ft (61.9 m)
Max Span54.1 ft (16.5 m)
Deck Width83.0 ft (25.3 m)
Deck Area1566.1 sq m
Main Spans4
Year Built1965

Traffic

Avg Daily Traffic21,682 (2014)
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number1805709M6760002

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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