Structure 121020325602481 · Harris County, TX

Bw 8 E over John Ralston RD

Carries Bw 8 E over John Ralston RD, 4.28 Mi E Of US 59.

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 FT1,175 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,175 ft end to end, longest span 125 ft: about 3.3 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.

Built201016 years old
Length1174.9 ft358.1 m
Daily traffic63,500counted 2010
Last inspectedAugust 2022every 48 months

Location

StateTexas
CountyHarris
Location4.28 Mi E Of US 59
CarriesBw 8 E
CrossesJohn Ralston RD
Coordinates29.93411, -95.22569

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1174.9 ft (358.1 m)
Max Span125.0 ft (38.1 m)
Deck Width125.3 ft (38.2 m)
Deck Area13679.4 sq m
Main Spans10
Year Built2010

Traffic

Avg Daily Traffic63,500 (2010)
Truck Traffic4%
Lanes On Bridge6
Lanes Under Bridge7

Inspection & Ownership

Last InspectionAugust 2022
Inspection FrequencyEvery 48 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020325602481

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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