US Bridges

FM over I-35

Good

Cerro Gordo County, Iowa · 2.0 Mi. N of Jct. SR B60 · Structure no. 000000000602290

Built
1972
53 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
282 ft
4 main spans
Daily traffic
29
2022 count
Owner
State
State Highway Agency

About this bridge

FM over I-35 is a prestressed concrete stringer/multi-beam or girder carrying FM over I-35 in Cerro Gordo County, Iowa. It was built in 1972, so it is 53 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 29 vehicles a day, roughly 41% of them trucks, projected to reach 29 by 2044. The structure is 282 ft (86 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesI-35
Location2.0 Mi. N of Jct. SR B60
RouteCounty Highway 0
StateIowa
Coordinates43.0093, -93.34132
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48.5 US tons
Inventory rating25 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length282 ft (86 m)
Longest span97 ft (29.6 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2044
Trucks41%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FM over I-35 built?

It was built in 1972, making it 53 years old in 2025.

What condition is FM over I-35 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does FM over I-35 carry?

About 29 vehicles per day (2022 count), of which roughly 41% are trucks.

How long is FM over I-35?

The structure is 282 ft (86 m) long with a longest span of 97 ft (29.6 m) and a deck 33 ft wide.

Who owns FM over I-35?

It is owned by the State Highway Agency.