Structure 120200059802476 · Brazoria County, TX

SH 288 NB over FM 518

Carries SH 288 NB over FM 518, 2.05 Mi. S. Of Harris Cl.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT337 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

337 ft end to end, longest span 137 ft: about 5 semi-trucks nose to tail. 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
Length336.9 ft102.7 m
Daily traffic45,724counted 2017
Last inspectedOctober 2022every 48 months

Location

StateTexas
CountyBrazoria
Location2.05 Mi. S. Of Harris Cl
CarriesSH 288 NB
CrossesFM 518
Coordinates29.55592, -95.38749

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length336.9 ft (102.7 m)
Max Span137.1 ft (41.8 m)
Deck Width58.4 ft (17.8 m)
Deck Area1828.1 sq m
Main Spans3
Year Built2019

Traffic

Avg Daily Traffic45,724 (2017)
Truck Traffic12%
Lanes On Bridge3
Lanes Under Bridge12

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number120200059802476

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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