Structure 120200059802471 · Brazoria County, TX

Sh288 Nbfr To Tlnb over SH 288 NB And H Slough

Carries Sh288 Nbfr To Tlnb over SH 288 NB And H Slough, 0.5 Mi N Of FM 518.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,439 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

1,439 ft end to end, longest span 122 ft: about 4.0 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.

Built20242 years old
Length1439.0 ft438.6 m
Daily traffic6,614counted 2023
Last inspectedOctober 2024every 24 months

Location

StateTexas
CountyBrazoria
Location0.5 Mi N Of FM 518
CarriesSh288 Nbfr To Tlnb
CrossesSH 288 NB And H Slough
Coordinates29.56252, -95.38689

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1439.0 ft (438.6 m)
Max Span122.0 ft (37.2 m)
Deck Width26.2 ft (8 m)
Deck Area3508.8 sq m
Main Spans12
Year Built2024

Traffic

Avg Daily Traffic6,614 (2023)
Truck Traffic8%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical6 — Scour calculated, stable
Structure Number120200059802471

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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