ND HIGHWAY 10
Carrying ND HIGHWAY 10 over SWAN CREEK
4 EAST OF ND 18, Cass, North Dakota
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ND HIGHWAY 10
The ND HIGHWAY 10 bridge in Cass, North Dakota carries ND HIGHWAY 10 over SWAN CREEK. It was built in 1959, making it 67 years old today. It was last reconstructed in 1983, extending its service life. The structure is built primarily of concrete continuous and spans 2 sections, stretching 27.4 meters (90 feet) end to end. Daily traffic averages 210 vehicles, placing it in the lower-traffic tier of North Dakota bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 6/9, substructure at 5/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 35.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How ND HIGHWAY 10 compares
Live comparison across North Dakota.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1959
- Last Reconstructed
- 1983
- Material
- Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 27.4 m (90 ft)
- Deck Width
- 9.2 m (30 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 210 vehicles/day
- Structure Number
- 0010006645
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear flagged for priority repair.
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
How to read this record
ND HIGHWAY 10 is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare ND HIGHWAY 10 against other structures in Cass and across North Dakota. North Dakota bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for ND HIGHWAY 10?
ND HIGHWAY 10 in Cass, North Dakota has a deck rating of 4/9, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is ND HIGHWAY 10 inspected?
ND HIGHWAY 10's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 210 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ND HIGHWAY 10 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for ND HIGHWAY 10?
ND HIGHWAY 10 has an NBI inventory load rating of 35.8 metric tons.
Who is responsible for maintaining ND HIGHWAY 10?
ND HIGHWAY 10 is owned and maintained by State Highway Agency.
How old is ND HIGHWAY 10 and does age affect safety?
ND HIGHWAY 10 was built in 1959, making it 67 years old and last reconstructed in 1983.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.