US Bridges

IRR BIA RTE 1029 over Unnamed Tidal Slough

Fair

Bethel Census Area, Alaska · .75KM Southeast of School · Structure no. 0000E02276T0770

Built
2002
23 years old
Condition
Fair
inspected July 2024
Type
Truss - Thru
Steel
Length
58 ft
1 main span
Daily traffic
300
2019 count
Owner
Tribal
Indian Tribal Government

About this bridge

IRR BIA RTE 1029 over Unnamed Tidal Slough is a steel truss - thru carrying IRR BIA RTE 1029 over Unnamed Tidal Slough in Bethel Census Area, Alaska. It was built in 2002, so it is 23 years old, younger 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.

It carries about 300 vehicles a day, projected to reach 450 by 2039. The structure is 58 ft (17.7 m) long and 10 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIRR BIA RTE 1029
CrossesUnnamed Tidal Slough
Location.75KM Southeast of School
RouteFederal Lands Road 1029
StateAlaska
Coordinates59.87198, -163.14984
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating5.5 US tons
Inventory rating5.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length58 ft (17.7 m)
Longest span57 ft (17.5 m)
Deck width10 ft (3 m)
Roadway width10 ft (3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2019)
Projected traffic450 by 2039
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerIndian Tribal Government
Maintained byIndian Tribal Government
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 BIA RTE 1029 over Unnamed Tidal Slough built?

It was built in 2002, making it 23 years old in 2025.

What condition is IRR BIA RTE 1029 over Unnamed Tidal Slough 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 July 2024.

How much traffic does IRR BIA RTE 1029 over Unnamed Tidal Slough carry?

About 300 vehicles per day (2019 count).

How long is IRR BIA RTE 1029 over Unnamed Tidal Slough?

The structure is 58 ft (17.7 m) long with a longest span of 57 ft (17.5 m) and a deck 10 ft wide.

Who owns IRR BIA RTE 1029 over Unnamed Tidal Slough?

It is owned by the Indian Tribal Government.