US Bridges

FM Lake Drive over Over Cnw RR

PoorPosted for load

Franklin County, Iowa · 092202009 · Structure no. 000000000157630

Built
1936
89 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
127 ft
3 main spans
Daily traffic
255
2022 count
Owner
County
County Highway Agency

About this bridge

FM Lake Drive over Over Cnw RR is a steel continuous stringer/multi-beam or girder carrying FM Lake Drive over Over Cnw RR in Franklin County, Iowa. It was built in 1936, so it is 89 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 255 vehicles a day, roughly 9% of them trucks, projected to reach 255 by 2043. The structure is 127 ft (38.7 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM Lake Drive
CrossesOver Cnw RR
Location092202009
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.763, -93.23205
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39 US tons
Inventory rating23.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length127 ft (38.7 m)
Longest span48 ft (14.6 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255 (2022)
Projected traffic255 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$978,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM Lake Drive over Over Cnw RR built?

It was built in 1936, making it 89 years old in 2025.

What condition is FM Lake Drive over Over Cnw RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does FM Lake Drive over Over Cnw RR carry?

About 255 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is FM Lake Drive over Over Cnw RR?

The structure is 127 ft (38.7 m) long with a longest span of 48 ft (14.6 m) and a deck 28 ft wide.

Who owns FM Lake Drive over Over Cnw RR?

It is owned by the County Highway Agency.