Structure 120850036704024 · Galveston County, TX

Sh87 Ferry N Slp 4 over Galveston Bay

Carries Sh87 Ferry N Slp 4 over Galveston Bay, 1.0 Mi W Of Lp 108.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

100 ft end to end. Lengths and the car 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 lift bridge (drawn closed).

Built198046 years old
Length100.1 ft30.5 m
Daily traffic2,694counted 2023
Last inspectedOctober 2024every 24 months

Location

StateTexas
CountyGalveston
Location1.0 Mi W Of Lp 108
CarriesSh87 Ferry N Slp 4
CrossesGalveston Bay
Coordinates29.36271, -94.77944

Physical Characteristics

MaterialSteel
DesignMovable - Lift
Total Length100.1 ft (30.5 m)
Max Span35.1 ft (10.7 m)
Deck Width35.1 ft (10.7 m)
Deck Area326.4 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic2,694 (2023)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number120850036704024

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.

Nearby Bridges