Structure 180570058101108 · Dallas County, TX

Lp 12 over Trinity River Relief #2

Carries Lp 12 over Trinity River Relief #2, 1.30 Mi NE Of SH 310.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT216 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

216 ft end to end, longest span 72 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.

Built200026 years old
Length215.9 ft65.8 m
Daily traffic23,795counted 2022
Last inspectedMay 2024every 24 months

Location

StateTexas
CountyDallas
Location1.30 Mi NE Of SH 310
CarriesLp 12
CrossesTrinity River Relief #2
Coordinates32.71100, -96.72638

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length215.9 ft (65.8 m)
Max Span71.9 ft (21.9 m)
Deck Width85.0 ft (25.9 m)
Deck Area1704.2 sq m
Main Spans3
Year Built2000

Traffic

Avg Daily Traffic23,795 (2022)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number180570058101108

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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