US Bridges

221st Street over Over BNSF RR

Fair

Mills County, Iowa · 072432209 · Structure no. 000000000035791

Built
2009
16 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
760 ft
7 main spans
Daily traffic
847
2022 count
Owner
County
County Highway Agency

About this bridge

221st Street over Over BNSF RR is a prestressed concrete stringer/multi-beam or girder carrying 221st Street over Over BNSF RR in Mills County, Iowa. It was built in 2009, so it is 16 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 847 vehicles a day, roughly 11% of them trucks, projected to reach 847 by 2043. The structure is 760 ft (231.6 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries221st Street
CrossesOver BNSF RR
Location072432209
RouteCounty Highway 0
CountyMills County
StateIowa
Coordinates41.01688, -95.76667
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHL 93
Structure length760 ft (231.6 m)
Longest span115 ft (35.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic847 (2022)
Projected traffic847 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 221st Street over Over BNSF RR built?

It was built in 2009, making it 16 years old in 2025.

What condition is 221st Street over Over BNSF RR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does 221st Street over Over BNSF RR carry?

About 847 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is 221st Street over Over BNSF RR?

The structure is 760 ft (231.6 m) long with a longest span of 115 ft (35.1 m) and a deck 33 ft wide.

Who owns 221st Street over Over BNSF RR?

It is owned by the County Highway Agency.