Structure 120200100301016 · Brazoria County, TX

FM 523 over Up Rr & CR 171

Carries FM 523 over Up Rr & CR 171, 1.20 Mi SE Of SH 35.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,305 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

1,305 ft end to end, longest span 115 ft: about 3.6 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.

Built199135 years old
Length1305.1 ft397.8 m
Daily traffic5,191counted 2020
Last inspectedNovember 2022every 48 months

Location

StateTexas
CountyBrazoria
Location1.20 Mi SE Of SH 35
CarriesFM 523
CrossesUp Rr & CR 171
Coordinates29.18761, -95.38766

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1305.1 ft (397.8 m)
Max Span115.2 ft (35.1 m)
Deck Width42.7 ft (13 m)
Deck Area5171.4 sq m
Main Spans12
Year Built1991

Traffic

Avg Daily Traffic5,191 (2020)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number120200100301016

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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