US Bridges

Hopkins Alley over Bauer-Hopkins Trestle

FairPosted for load

Ketchikan Gateway Borough, Alaska · Mile Point 0.1 · Structure no. 1472

Built
1950
75 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
697 ft
63 main spans
Daily traffic
400
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hopkins Alley over Bauer-Hopkins Trestle is a wood or timber stringer/multi-beam or girder carrying Hopkins Alley over Bauer-Hopkins Trestle in Ketchikan Gateway Borough, Alaska. It was built in 1950, so it is 75 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 400 vehicles a day, roughly 1% of them trucks, projected to reach 480 by 2035. The structure is 697 ft (212.4 m) long and 11 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHopkins Alley
CrossesBauer-Hopkins Trestle
LocationMile Point 0.1
RouteCity Street NSPCY
StateAlaska
Coordinates55.34444, -131.6525
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating20.4 US tons
Inventory rating14.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans63
Design loadUnknown
Structure length697 ft (212.4 m)
Longest span20 ft (6.1 m)
Deck width11 ft (3.4 m)
Roadway width9 ft (2.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2018)
Projected traffic480 by 2035
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hopkins Alley over Bauer-Hopkins Trestle built?

It was built in 1950, making it 75 years old in 2025.

What condition is Hopkins Alley over Bauer-Hopkins Trestle in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Hopkins Alley over Bauer-Hopkins Trestle carry?

About 400 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Hopkins Alley over Bauer-Hopkins Trestle?

The structure is 697 ft (212.4 m) long with a longest span of 20 ft (6.1 m) and a deck 11 ft wide.

Who owns Hopkins Alley over Bauer-Hopkins Trestle?

It is owned by the City or Municipal Highway Agency.