FHWA NBI 2026 Inspection record Public-domain dataset

IRR BIA RTE 1029

Carrying IRR BIA RTE 1029 over SWAMPY POND

0.1KM SOUTH OF IRA OFFICE, Kenai Peninsula, Alaska

FHWA NBI inspection record for this structure. Condition ratings, inventory load rating, span, deck width, and average daily traffic refresh annually with each NBI release.

Fair
1 t Inventory load rating

Bridge Snapshot: IRR BIA RTE 1029

The IRR BIA RTE 1029 bridge in Kenai Peninsula, Alaska carries IRR BIA RTE 1029 over SWAMPY POND. It was built in 2000, making it 26 years old today. The structure is built primarily of wood or timber and spans 23 sections, stretching 51.3 meters (168 feet) end to end. Daily traffic averages 200 vehicles, placing it in the lower-traffic tier of Alaska bridges. It is owned and maintained by Indian Tribal Government, the entity responsible for routine inspections and any needed repairs.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 6/9 on the 0–9 NBI scale, where 9 is excellent and 0 is failed. The weakest component sits in fair condition, which drives the overall status of this bridge. No major component scores in the poor range, so the bridge is not classified as structurally deficient under federal criteria. Its NBI inventory load rating is 1.1 metric tons — the load level the structure is rated to carry at inventory (long-term) level.

In a county that maintains hundreds of NBI-tracked bridges, IRR BIA RTE 1029 is one data point in a Alaska inventory that FHWA inspects on a two-year cycle (more often when ratings fall). Bridge age alone is not a reliable safety signal — a 26-era structure can outperform a newer one when maintenance is consistent, materials are sound, and traffic loads stay within design limits. Use the condition ratings above, the sufficiency score, and the structurally-deficient flag together to read the bridge's real status, and check the linked county and state pages to see how this bridge ranks against its peers.

Every figure on this page comes directly from the Federal Highway Administration National Bridge Inventory (NBI), the public dataset that catalogs more than 617,000 highway bridges across the United States and is updated annually from the records that each state Department of Transportation submits to the FHWA. The condition codes use the standardized FHWA Recording and Coding Guide, the same scale that determines federal eligibility for the Highway Bridge Program and the Surface Transportation Block Grant set-aside for off-system bridges. A "structurally deficient" classification under those federal criteria is a maintenance and funding flag, never a closure order; states keep deficient bridges open with load posting, weight limits, or accelerated inspection cycles until rehabilitation or replacement is funded. See our methodology for refresh cadence and the exact NBI release vintage powering each record.

How IRR BIA RTE 1029 compares

▼ 33.7
Load rating vs Alaska average (34.8 t)
Bottom 1%
Lower load rating than 99% of Alaska bridges
45
Bridges in Kenai Peninsula · 10 structurally deficient
IRR BIA RTE 1029 1.1 t
Alaska average 34.8 t

NBI inventory load rating (metric tons) and structural-deficiency status compared across Alaska, computed live from the FHWA NBI.

Condition Ratings

Deck
7/9
Good (7–9)
Superstructure
7/9
Good (7–9)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
1.1 t
NBI inventory level (metric tons)
SD Status
Not SD

Ratings are on a 0–9 scale: 9 = Excellent, 7–8 = Good, 5–6 = Fair, 3–4 = Poor, 0–2 = Critical/Failed. Sufficiency rating (0–100) combines structural adequacy, functional obsolescence, and essentiality.

Structural Details

Year Built
2000
Material
Wood or Timber
Number of Spans
23
Structure Length
51.3 m (168 ft)
Deck Width
3.1 m (10 ft)
Owner
Indian Tribal Government
Avg Daily Traffic
200 vehicles/day
Structure Number
0000E02276T0780

Location

0.1KM SOUTH OF IRA OFFICE, Kenai Peninsula, Alaska
59.332961, -151.812175
View on Google Maps ↗

Data Source

Data from the FHWA National Bridge Inventory (NBI). Bridge inspections are required every two years by federal law. Conditions reflect the most recent inspection.

FHWA NBI Program ↗

Condition Analysis

Built in 2000, this bridge is 26 years old. It carries approximately 200 vehicles per day. Based on the most recent FHWA inspection:

  • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
  • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
  • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.

Its NBI inventory load rating is low, indicating a load-restricted structure.

Frequently Asked Questions

What do the condition ratings mean for IRR BIA RTE 1029?

Bridge condition ratings use a 0–9 scale set by the Federal Highway Administration (FHWA). Ratings 7–9 indicate good condition with no significant problems. Ratings 5–6 mean fair condition with minor issues. Ratings 3–4 indicate poor condition requiring repair. Ratings 0–2 are critical, meaning the bridge has serious structural problems. IRR BIA RTE 1029 in Kenai Peninsula, Alaska has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 6/9.

How often is IRR BIA RTE 1029 inspected?

Federal law requires most highway bridges to be inspected at least every 24 months. Bridges in poor condition or with known issues may be inspected more frequently (every 12 months or less). IRR BIA RTE 1029 is part of the National Bridge Inventory maintained by the FHWA. With 200 vehicles crossing daily, regular inspection is essential.

What does "structurally deficient" mean for a bridge?

A structurally deficient bridge has at least one major component (deck, superstructure, or substructure) rated 4 or below on the FHWA 0–9 scale. This classification does NOT mean the bridge is unsafe for travel — it means the bridge needs repair, rehabilitation, or eventual replacement. Structurally deficient bridges remain open and are monitored. IRR BIA RTE 1029 is not classified as structurally deficient.

What is the inventory load rating for IRR BIA RTE 1029?

The NBI inventory rating is the load level a bridge is rated to carry for an indefinite period, recorded in metric tons. A lower number means the structure is more load-restricted. IRR BIA RTE 1029 has an inventory load rating of 1.1 metric tons. It is distinct from the FHWA sufficiency rating, a separate 0–100 funding-eligibility score that this dataset does not include.

Who is responsible for maintaining IRR BIA RTE 1029?

Bridge ownership and maintenance responsibility varies — bridges may be owned by state DOTs, counties, cities, railroads, or federal agencies. IRR BIA RTE 1029 is maintained by Indian Tribal Government. The FHWA oversees the National Bridge Inventory program and sets inspection standards, but day-to-day maintenance falls to the owning agency. If you notice damage or safety concerns, contact your state DOT or call 911 for emergencies.

How old is IRR BIA RTE 1029 and does age affect safety?

IRR BIA RTE 1029 was built in 2000, making it 26 years old. Bridge age alone does not determine safety — condition depends on materials, design, traffic load, maintenance history, and environmental exposure. Many older bridges remain in good condition due to regular maintenance and reconstruction.

Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A structurally deficient rating does not mean a bridge is closed or unsafe for travel — it indicates the bridge requires repair or replacement. For current closure or safety information, contact your state DOT.

Related

Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial