Is INTERSTATE 80 Safe?
INTERSTATE 80 in California has a Condition Score of 0/100 (Grade F). The deck is rated 0/9, superstructure 0/9, and substructure 0/9. The bridge is classified as structurally deficient under FHWA criteria. Built in 1936 (90 years old), it carries approximately 288K vehicles per day.
INTERSTATE 80 carries an F on the BridgeSafety Condition Score with 0/100 — the bottom tier of the FHWA NBI distribution. Component ratings flag the structure for near-term rehabilitation or replacement; the bridge may remain open to traffic but is on the priority list for action.
The bridge was built in 1936, making it 90 years old — well beyond the typical 50-year design life of bridges constructed in that era. Bridges of this vintage usually need substantial rehabilitation or replacement once their original components have aged out, regardless of current condition ratings. INTERSTATE 80 carries an average daily traffic count of 288,000 vehicles, with 14 lane(s) crossing Temescal Creek. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
BridgeSafety reads the FHWA National Bridge Inventory (NBI) — the authoritative federal dataset covering every public road bridge longer than 20 feet in the United States. Each bridge record includes age, structural condition by component, traffic load, and the formal sufficiency rating that determines federal funding eligibility.
The Structurally Deficient designation flags bridges where at least one primary component (deck, superstructure, substructure) is rated in poor condition on the FHWA 0-9 scale. FHWA explicitly notes that bridges with this designation remain open and safe when they meet load-rating requirements; the designation signals rehabilitation need, not closure.
What the Condition Score Means
INTERSTATE 80's Condition Score of 0/100 falls in the F tier. One or more primary components rate at the bottom of the NBI scale. State DOTs typically respond to ratings in this range with weight postings, accelerated inspection cycles, immediate repair work, or in some cases lane closures. The score is descriptive of inspection findings and is the trigger for federal replacement funding eligibility — it is not, by itself, a closure determination.
INTERSTATE 80 is currently classified as structurally deficient under FHWA criteria, meaning at least one of its load-carrying components scores 4 or lower on the NBI 0-9 scale. This federal classification determines eligibility for replacement and rehabilitation funding through the Bridge Investment Program and state formula funds. It is a condition-based label, not a safety determination. Bridges in this category remain open at state-set posted loads while their ratings are addressed.
Component Ratings
| Component | Rating | Scale |
|---|---|---|
| Deck | 0 | /9 |
| Superstructure | 0 | /9 |
| Substructure | 0 | /9 |
| Overall Score | 0/100 | Grade F |
FHWA scale: 9 Excellent, 7 Good, 5 Fair, 4 Poor, lower readings indicate progressively worse condition. Component ratings reflect the most recent inspection submitted to the National Bridge Inventory.
Age and Traffic Context
INTERSTATE 80 was built in 1936, 90 years ago — well beyond a typical original 50-year design life. Many U.S. bridges of this vintage have been rehabilitated multiple times (deck replacements, superstructure work) and remain in active service. Long age does not indicate poor current condition; the inspection ratings on this page are the relevant signal.
INTERSTATE 80 carries roughly 288K vehicles per day, a heavy traffic volume that places it among the higher-priority structures in the inventory for maintenance allocation. Heavy daily traffic accelerates deck wear, joint deterioration, and accumulated fatigue on superstructure elements, which is why busy interstate and arterial bridges often appear on rehabilitation priority lists.
Bridge Details
Frequently Asked Questions
Is INTERSTATE 80 safe to cross?
INTERSTATE 80 remains open to traffic at posted load limits set by the owning state DOT. Its current Condition Score is 0/100 (Grade F). NBI condition ratings describe observed physical condition; they are not closure or safety determinations. State DOTs and the FHWA bridge program are the authoritative sources for any operational restriction on a specific structure. The bridge meets the federal definition of "structurally deficient" — a funding-eligibility classification — but this does not mean it is unsafe at posted loads.
What do the deck, superstructure, and substructure ratings mean?
On the FHWA NBI 0-9 scale: 9 is Excellent, 7 Good, 5 Fair, 4 Poor, and 0 means the component has failed. INTERSTATE 80 rates deck 0/9, superstructure 0/9, and substructure 0/9. The deck is the riding surface; the superstructure carries loads from deck to bearings (girders, beams, trusses); the substructure transfers loads to foundations (piers, abutments). A rating of 4 or lower on any of the three triggers the "structurally deficient" classification.
When was INTERSTATE 80 last inspected?
Federal regulation requires inspection at least every 24 months by a certified team leader. Inspection records flow from the California Department of Transportation to the FHWA NBI; the dataset on this page reflects the 2025 federal NBI release, refreshed April 2026. For the most recent inspection report or any operational status (postings, lane closures), the California DOT is the authoritative source.
Is INTERSTATE 80 structurally deficient?
Yes — INTERSTATE 80 is currently classified as structurally deficient because at least one of its three primary load-carrying components rates 4 or lower on the NBI 0-9 scale. The classification is condition-based and determines federal funding eligibility; it is not a safety or closure determination.
Where can I see official inspection records for INTERSTATE 80?
The Federal Highway Administration publishes the underlying inspection data through the National Bridge Inventory (https://www.fhwa.dot.gov/bridge/nbi.cfm). The California DOT publishes additional state-level reporting and operational notices. The ASCE Infrastructure Report Card provides national-level analysis that draws on the same NBI data.