US Bridges

FM over BNSF RR

Good

Lyon County, Iowa · 098462201 · Structure no. 000000000228831

Built
2003
22 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
223 ft
3 main spans
Daily traffic
698
2022 count
Owner
County
County Highway Agency

About this bridge

FM over BNSF RR is a prestressed concrete stringer/multi-beam or girder carrying FM over BNSF RR in Lyon County, Iowa. It was built in 2003, so it is 22 years old, younger 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 698 vehicles a day, roughly 18% of them trucks, projected to reach 698 by 2044. The structure is 223 ft (68 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesBNSF RR
Location098462201
RouteCounty Highway 0
StateIowa
Coordinates43.30089, -96.26482
Functional classRural Major 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.3 US tons
Inventory rating49.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length223 ft (68 m)
Longest span92 ft (28 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic698 (2022)
Projected traffic698 by 2044
Trucks18%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FM over BNSF RR built?

It was built in 2003, making it 22 years old in 2025.

What condition is FM over BNSF RR 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 July 2024.

How much traffic does FM over BNSF RR carry?

About 698 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is FM over BNSF RR?

The structure is 223 ft (68 m) long with a longest span of 92 ft (28 m) and a deck 33 ft wide.

Who owns FM over BNSF RR?

It is owned by the County Highway Agency.