US Bridges

SH87 Ferry S Slp 1 over Galveston Bay

Poor

Galveston County, Texas · 1.30 MI N of Seawall Blvd · Structure no. 120850036706026

Built
1980
45 years old
Condition
Poor
inspected September 2024
Type
Movable - Lift
Steel
Length
135 ft
1 main span
Daily traffic
3,836
2023 count
Owner
State
State Highway Agency

About this bridge

SH87 Ferry S Slp 1 over Galveston Bay is a steel movable - lift carrying SH87 Ferry S Slp 1 over Galveston Bay in Galveston County, Texas. It was built in 1980, so it is 45 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,836 vehicles a day, roughly 4% of them trucks, projected to reach 5,370 by 2042. The structure is 135 ft (41.1 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH87 Ferry S Slp 1
CrossesGalveston Bay
Location1.30 MI N of Seawall Blvd
RouteState Highway 87
StateTexas
Coordinates29.32748, -94.77306
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating38 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckOpen grating
Main spans1 (+3 approach)
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span45 ft (13.7 m)
Deck width35 ft (10.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck15 ft (4.7 m)

Traffic and service

Average daily traffic3,836 (2023)
Projected traffic5,370 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$9,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH87 Ferry S Slp 1 over Galveston Bay built?

It was built in 1980, making it 45 years old in 2025.

What condition is SH87 Ferry S Slp 1 over Galveston Bay in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does SH87 Ferry S Slp 1 over Galveston Bay carry?

About 3,836 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SH87 Ferry S Slp 1 over Galveston Bay?

The structure is 135 ft (41.1 m) long with a longest span of 45 ft (13.7 m) and a deck 35 ft wide.

Who owns SH87 Ferry S Slp 1 over Galveston Bay?

It is owned by the State Highway Agency.