Structure 201240066701007 · Jefferson County, TX

SH 347 NB over FM 366

Carries SH 347 NB over FM 366, At FM 366 Int.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT313 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

313 ft end to end, longest span 100 ft: about 4 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.

Built196462 years old
Length313.0 ft95.4 m
Daily traffic10,465counted 2022
Last inspectedJuly 2024every 24 months

Location

StateTexas
CountyJefferson
LocationAt FM 366 Int
CarriesSH 347 NB
CrossesFM 366
Coordinates29.98565, -94.00156

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length313.0 ft (95.4 m)
Max Span100.1 ft (30.5 m)
Deck Width33.1 ft (10.1 m)
Deck Area963.5 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic10,465 (2022)
Truck Traffic11%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number201240066701007

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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