LARK AVE
Carrying LARK AVE over MAYNES CR
091212402, Franklin, Iowa
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: LARK AVE
The LARK AVE bridge in Franklin, Iowa carries LARK AVE over MAYNES CR. It was built in 1956, making it 70 years old today. It was last reconstructed in 1970, extending its service life. The structure is built primarily of prestressed concrete and spans 1 section, stretching 13.4 meters (44 feet) end to end. Daily traffic averages 30 vehicles, placing it in the lower-traffic tier of Iowa bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 3/9. 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 10.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How LARK AVE compares
Live comparison across Iowa.
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 How the historical reference is calculated.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
- 1956
- Last Reconstructed
- 1970
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 13.4 m (44 ft)
- Deck Width
- 6.7 m (22 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 30 vehicles/day
- Structure Number
- 000000000157181
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in poor condition (3/9), showing advanced deterioration that may require priority repair.
How to read this record
LARK AVE 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 LARK AVE against other structures in Franklin and across Iowa. Iowa 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 LARK AVE?
LARK AVE in Franklin, Iowa has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 3/9 on the FHWA's 0–9 scale.
How often is LARK AVE inspected?
LARK AVE'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 30 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LARK AVE 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 LARK AVE?
LARK AVE has an NBI inventory load rating of 10.2 metric tons.
Who is responsible for maintaining LARK AVE?
LARK AVE is owned and maintained by County Highway Agency.
How old is LARK AVE and does age affect safety?
LARK AVE was built in 1956, making it 70 years old and last reconstructed in 1970.
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.