Structure 1805709D0470025 · Dallas County, TX

Dallas No. Tollway over Forest Lane

Carries Dallas No. Tollway over Forest Lane, 1.2 Mi S Of Lbj Freeway.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT172 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

172 ft end to end, longest span 59 ft: about 2 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.

Built1966rebuilt 1983
Length171.9 ft52.4 m
Daily traffic125,690counted 2017
Last inspectedFebruary 2023every 24 months

Location

StateTexas
CountyDallas
Location1.2 Mi S Of Lbj Freeway
CarriesDallas No. Tollway
CrossesForest Lane
Coordinates32.90948, -96.81453

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length171.9 ft (52.4 m)
Max Span59.1 ft (18 m)
Deck Width105.6 ft (32.2 m)
Deck Area1687.3 sq m
Main Spans2
Year Built1966 (reconstructed 1983)

Traffic

Avg Daily Traffic125,690 (2017)
Truck Traffic4%
Lanes On Bridge6
Lanes Under Bridge7

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number1805709D0470025

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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