NB JOSLYN TO I-75
Carrying NB JOSLYN TO I-75 over GTW RR
5.7 MI NW OF M-59, Oakland, Michigan
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
NB JOSLYN TO I-75 in Oakland, Michigan sits above 22% of rated Michigan bridges on inventory load rating (32 t), while its 1981 build year is earlier than 51% of Oakland's recorded-year cohort (508 bridges).
NB JOSLYN TO I-75 in Oakland, Michigan is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1981, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure MI:000000000007998
LATE-CENTURY · PRESTRESS · MULTI-SPAN · TIED-CTRL · ARTERIAL-ADT · STANDARD-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- PRESTRESS Prestressed concrete
- MULTI-SPAN 3 spans
- TIED-CTRL Tied control
- ARTERIAL-ADT Arterial ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: NB JOSLYN TO I-75
The NB JOSLYN TO I-75 bridge in Oakland, Michigan carries NB JOSLYN TO I-75 over GTW RR. It was built in 1981, making it 45 years old today. It was last reconstructed in 2005, extending its service life. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 44.1 meters (145 feet) end to end. Daily traffic averages 5,075 vehicles, placing it in the moderately-trafficked tier of Michigan bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range.
How NB JOSLYN TO I-75 compares
Age against the county: built in 1981, earlier than 257 of Oakland's 508 bridges with a recorded construction year (51%), against a county median build year of 1982. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Michigan bridges with a recorded inventory load rating (11,366 of 11,371 rated).
NB JOSLYN TO I-75 vs every rated Michigan bridge
Inventory load rating (metric tons), FHWA NBI, this state
32 Top 78% higher than 22% of 11,366 bridges
rated Michigan bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Oakland inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 508 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1981
- Last Reconstructed
- 2005
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 44.1 m (145 ft)
- Deck Width
- 9.1 m (30 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 5,075 vehicles/day
- Structure Number
- 000000000007998
Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether NB JOSLYN TO I-75 is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare NB JOSLYN TO I-75 against other structures in Oakland and across Michigan. Michigan 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 NB JOSLYN TO I-75?
NB JOSLYN TO I-75 in Oakland, Michigan has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is NB JOSLYN TO I-75 inspected?
NB JOSLYN TO I-75'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 5,075 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NB JOSLYN TO I-75 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for NB JOSLYN TO I-75?
NB JOSLYN TO I-75 has an NBI inventory load rating of 31.8 metric tons.
Who is responsible for maintaining NB JOSLYN TO I-75?
NB JOSLYN TO I-75 is owned and maintained by State Highway Agency.
How old is NB JOSLYN TO I-75 and does age affect safety?
NB JOSLYN TO I-75 was built in 1981, making it 45 years old and last reconstructed in 2005.
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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.