Structure 180570000808170 · Dallas County, TX

SH 180 WB over Mountain Creek Relief #3

Carries SH 180 WB over Mountain Creek Relief #3, 0.60 Mi W Of Loop 12.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT238 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

238 ft end to end, longest span 27 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 slab bridge.

Built196759 years old
Length237.9 ft72.5 m
Daily traffic9,569counted 2023
Last inspectedDecember 2023every 24 months

Location

StateTexas
CountyDallas
Location0.60 Mi W Of Loop 12
CarriesSH 180 WB
CrossesMountain Creek Relief #3
Coordinates32.74971, -96.93076

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length237.9 ft (72.5 m)
Max Span26.9 ft (8.2 m)
Deck Width51.2 ft (15.6 m)
Deck Area1,131 sq m
Main Spans9
Year Built1967

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 possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number180570000808170

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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