Structure 201240006507071 · Jefferson County, TX

US 69 over Lnva Canal

Carries US 69 over Lnva Canal, 4.1 Mi NW Of IH 10.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT432 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

432 ft end to end, longest span 90 ft: about 6 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.

Built1957rebuilt 2020
Length432.1 ft131.7 m
Daily traffic54,237counted 2022
Last inspectedMay 2024every 24 months

Location

StateTexas
CountyJefferson
Location4.1 Mi NW Of IH 10
CarriesUS 69
CrossesLnva Canal
Coordinates30.14061, -94.17497

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length432.1 ft (131.7 m)
Max Span89.9 ft (27.4 m)
Deck Width128.0 ft (39 m)
Deck Area5136.3 sq m
Main Spans3
Year Built1957 (reconstructed 2020)

Traffic

Avg Daily Traffic54,237 (2022)
Truck Traffic6%
Lanes On Bridge8

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number201240006507071

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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