Structure 180610019602510 · Denton County, TX

Dc Ih35sb Sh121eb over Ih35e/sh121/timber Crk

Carries Dc Ih35sb Sh121eb over Ih35e/sh121/timber Crk, IH 35/sh 121 Interchange.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,076 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

2,076 ft end to end, longest span 220 ft: about 5.8 football fields. 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.

Built20197 years old
Length2076.1 ft632.8 m
Daily traffic6,000counted 2010
Last inspectedFebruary 2023every 24 months

Location

StateTexas
CountyDenton
LocationIH 35/sh 121 Interchange
CarriesDc Ih35sb Sh121eb
CrossesIh35e/sh121/timber Crk
Coordinates32.99985, -96.95847

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length2076.1 ft (632.8 m)
Max Span220.1 ft (67.1 m)
Deck Width27.9 ft (8.5 m)
Deck Area5378.8 sq m
Main Spans2
Year Built2019

Traffic

Avg Daily Traffic6,000 (2010)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge28

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number180610019602510

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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