Structure 180570019603205 · Dallas County, TX

IH 35e NB Conn over Dart & Dnt

Carries IH 35e NB Conn over Dart & Dnt, 1.0 Mi N Of Sp 366.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,070 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 7/9

1,070 ft end to end, longest span 116 ft: about 3.0 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.

Built196759 years old
Length1069.9 ft326.1 m
Daily traffic—reported figure implausible
Last inspectedMarch 2024every 24 months

Location

StateTexas
CountyDallas
Location1.0 Mi N Of Sp 366
CarriesIH 35e NB Conn
CrossesDart & Dnt
Coordinates32.79764, -96.81498

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1069.9 ft (326.1 m)
Max Span116.1 ft (35.4 m)
Deck Width24.0 ft (7.3 m)
Deck Area2380.5 sq m
Main Spans11
Year Built1967

Traffic

Avg Daily Traffic146,500 (2012)
That is about 146,500 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 Traffic6%
Lanes On Bridge1
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number180570019603205

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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