Structure 120800002712061 · Fort Bend County, TX

IH 69 / US 59 SB over SH 99 & Drain

Carries IH 69 / US 59 SB over SH 99 & Drain, 1.3 Mi SW Of Brazos River.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT771 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

771 ft end to end, longest span 145 ft: about 2.1 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 box-beam bridge.

Built200719 years old
Length771.0 ft235 m
Daily traffic16,033counted 2019
Last inspectedDecember 2024every 24 months

Location

StateTexas
CountyFort Bend
Location1.3 Mi SW Of Brazos River
CarriesIH 69 / US 59 SB
CrossesSH 99 & Drain
Coordinates29.56174, -95.68962

Physical Characteristics

MaterialSteel
DesignBox Beam - Multiple
Total Length771.0 ft (235 m)
Max Span145.0 ft (44.2 m)
Deck Width104.0 ft (31.7 m)
Deck Area7449.5 sq m
Main Spans2
Year Built2007

Traffic

Avg Daily Traffic16,033 (2019)
Truck Traffic9%
Lanes On Bridge5
Lanes Under Bridge12

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number120800002712061

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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