Structure 180570000808373 · Dallas County, TX

SH 180 EB over Mountain Creek

Carries SH 180 EB over Mountain Creek, 0.50 Mi W Of Loop 12.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT530 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

530 ft end to end, longest span 120 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.

Built198739 years old
Length529.9 ft161.5 m
Daily traffic9,569counted 2023
Last inspectedDecember 2023every 24 months

Location

StateTexas
CountyDallas
Location0.50 Mi W Of Loop 12
CarriesSH 180 EB
CrossesMountain Creek
Coordinates32.74968, -96.92579

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length529.9 ft (161.5 m)
Max Span120.1 ft (36.6 m)
Deck Width57.1 ft (17.4 m)
Deck Area2810.1 sq m
Main Spans5
Year Built1987

Traffic

Avg Daily Traffic9,569 (2023)
Truck Traffic5%
Lanes On Bridge3

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number180570000808373

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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