US Bridges

Irr:summer Bay RD over Summer Bay Creek

GoodPosted for load

Aleutians West Census Area, Alaska · Mile Point 0.1 · Structure no. 1686

Built
2014
11 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
400
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Irr:summer Bay RD over Summer Bay Creek is a steel stringer/multi-beam or girder carrying Irr:summer Bay RD over Summer Bay Creek in Aleutians West Census Area, Alaska. It was built in 2014, so it is 11 years old, younger than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 400 vehicles a day, roughly 14% of them trucks, projected to reach 1,310 by 2039. The structure is 70 ft (21.3 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIrr:summer Bay RD
CrossesSummer Bay Creek
LocationMile Point 0.1
StateAlaska
Coordinates53.89671, -166.45912
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.9 US tons
Inventory rating50.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span64 ft (19.5 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2020)
Projected traffic1,310 by 2039
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Irr:summer Bay RD over Summer Bay Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Irr:summer Bay RD over Summer Bay Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Irr:summer Bay RD over Summer Bay Creek carry?

About 400 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is Irr:summer Bay RD over Summer Bay Creek?

The structure is 70 ft (21.3 m) long with a longest span of 64 ft (19.5 m) and a deck 26 ft wide.

Who owns Irr:summer Bay RD over Summer Bay Creek?

It is owned by the City or Municipal Highway Agency.