Structure 1805709D0470203 · Dallas County, TX

Mockingbird Lane over Dallas N Tollway

Carries Mockingbird Lane over Dallas N Tollway, 0.7 Mi S Of Univ BLVD.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT98 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

98 ft end to end. Lengths and the car 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.

Built196660 years old
Length98.1 ft29.9 m
Daily traffic34,295counted 2019
Last inspectedMay 2023every 24 months

Location

StateTexas
CountyDallas
Location0.7 Mi S Of Univ BLVD
CarriesMockingbird Lane
CrossesDallas N Tollway
Coordinates32.83669, -96.81482

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length98.1 ft (29.9 m)
Max Span98.1 ft (29.9 m)
Deck Width60.0 ft (18.3 m)
Deck Area547.2 sq m
Main Spans1
Year Built1966

Traffic

Avg Daily Traffic34,295 (2019)
Truck Traffic3%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number1805709D0470203

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.

Nearby Bridges