Structure 180570019603474 · Dallas County, TX

IH 35e NB On-ramp over Merrell RD

Carries IH 35e NB On-ramp over Merrell RD, 0.4 Mi N Of Walnut Hill.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT520 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

520 ft end to end, longest span 108 ft: about 7 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.

Built201412 years old
Length520.0 ft158.5 m
Daily traffic1,633counted 2022
Last inspectedApril 2024every 48 months

Location

StateTexas
CountyDallas
Location0.4 Mi N Of Walnut Hill
CarriesIH 35e NB On-ramp
CrossesMerrell RD
Coordinates32.88800, -96.89764

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length520.0 ft (158.5 m)
Max Span107.9 ft (32.9 m)
Deck Width27.9 ft (8.5 m)
Deck Area1347.2 sq m
Main Spans5
Year Built2014

Traffic

Avg Daily Traffic1,633 (2022)
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180570019603474

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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