Structure 121020B64289007 · Harris County, TX

Tidwell RD WB over Hb & T Rr And Up Rr

Carries Tidwell RD WB over Hb & T Rr And Up Rr, 2.30 Mi E Of US 59.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,295 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

2,295 ft end to end, longest span 153 ft: about 6.4 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.

Built199432 years old
Length2294.9 ft699.5 m
Daily traffic13,094counted 2015
Last inspectedAugust 2023every 24 months

Location

StateTexas
CountyHarris
Location2.30 Mi E Of US 59
CarriesTidwell RD WB
CrossesHb & T Rr And Up Rr
Coordinates29.84849, -95.29020

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2294.9 ft (699.5 m)
Max Span152.9 ft (46.6 m)
Deck Width35.4 ft (10.8 m)
Deck Area7554.6 sq m
Main Spans2
Year Built1994

Traffic

Avg Daily Traffic13,094 (2015)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020B64289007

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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