US Bridges

Haines Highway over Big Boulder Creek

Good

Haines Borough, Alaska · Mile Point 33.2 · Structure no. 0745

Built
1991
34 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
120 ft
1 main span
Daily traffic
110
2020 count
Owner
State
State Highway Agency

About this bridge

Haines Highway over Big Boulder Creek is a prestressed concrete tee beam carrying Haines Highway over Big Boulder Creek in Haines Borough, Alaska. It was built in 1991, so it is 34 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 110 vehicles a day, roughly 28% of them trucks, projected to reach 130 by 2039. The structure is 120 ft (36.6 m) long and 39 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHaines Highway
CrossesBig Boulder Creek
LocationMile Point 33.2
RouteState Highway 95
StateAlaska
Coordinates59.43325, -136.19486
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating96.7 US tons
Inventory rating44.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length120 ft (36.6 m)
Longest span118 ft (36 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2020)
Projected traffic130 by 2039
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Haines Highway over Big Boulder Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Haines Highway over Big Boulder 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 May 2024.

How much traffic does Haines Highway over Big Boulder Creek carry?

About 110 vehicles per day (2020 count), of which roughly 28% are trucks.

How long is Haines Highway over Big Boulder Creek?

The structure is 120 ft (36.6 m) long with a longest span of 118 ft (36 m) and a deck 39 ft wide.

Who owns Haines Highway over Big Boulder Creek?

It is owned by the State Highway Agency.