Structure 180610036403094 · Denton County, TX

SH 121 over Drain

Carries SH 121 over Drain, 4.95 Mi NE Of IH 35e.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT65 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 65 ft across with 7 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built1994rebuilt 1997
Length65.0 ft19.8 m
Daily traffic31,000counted 2008
Last inspectedApril 2023every 24 months

Location

StateTexas
CountyDenton
Location4.95 Mi NE Of IH 35e
CarriesSH 121
CrossesDrain
Coordinates33.05426, -96.91438

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length65.0 ft (19.8 m)
Max Span4.9 ft (1.5 m)
Deck Area1201.9 sq m
Main Spans7
Year Built1994 (reconstructed 1997)

Traffic

Avg Daily Traffic31,000 (2008)
Truck Traffic7%
Lanes On Bridge14

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number180610036403094

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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