Structure 121020017706134 · Harris County, TX

IH 69 Nbml over San Jacinto River

Carries IH 69 Nbml over San Jacinto River, 1.7 Mi N Of FM 1960.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,645 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

1,645 ft end to end, longest span 81 ft: about 4.6 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.

Built1974rebuilt 2000
Length1645.0 ft501.4 m
Daily traffic78,458counted 2023
Last inspectedSeptember 2024every 12 months

Location

StateTexas
CountyHarris
Location1.7 Mi N Of FM 1960
CarriesIH 69 Nbml
CrossesSan Jacinto River
Coordinates30.02554, -95.25900

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1645.0 ft (501.4 m)
Max Span81.0 ft (24.7 m)
Deck Width82.7 ft (25.2 m)
Deck Area12635.3 sq m
Main Spans4
Year Built1974 (reconstructed 2000)

Traffic

Avg Daily Traffic78,458 (2023)
Truck Traffic8%
Lanes On Bridge5

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical3 — Scour critical
Structure Number121020017706134

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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