Structure 180610019602511 · Denton County, TX

Dc Ih35sb Sh121wb over SH 121 Wbfr/ih 35e Sbfr

Carries Dc Ih35sb Sh121wb over SH 121 Wbfr/ih 35e Sbfr, Ih35 / Sh121 Interchange.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,394 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

2,394 ft end to end, longest span 126 ft: about 6.7 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
Length2394.0 ft729.7 m
Daily traffic3,700counted 2010
Last inspectedFebruary 2023every 48 months

Location

StateTexas
CountyDenton
LocationIh35 / Sh121 Interchange
CarriesDc Ih35sb Sh121wb
CrossesSH 121 Wbfr/ih 35e Sbfr
Coordinates32.99939, -96.96108

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length2394.0 ft (729.7 m)
Max Span126.0 ft (38.4 m)
Deck Width27.9 ft (8.5 m)
Deck Area6202.4 sq m
Main Spans23
Year Built2019

Traffic

Avg Daily Traffic3,700 (2010)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge7

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180610019602511

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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