US Bridges

US 275 & Ia 92 over Over BNSF Rr/Sm Stream

Fair

Pottawattamie County, Iowa · 0.4 Mi. N of N JCT I-29 · Structure no. 000000000043550

Built
1968
57 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
312 ft
4 main spans
Daily traffic
5,050
2022 count
Owner
State
State Highway Agency

About this bridge

US 275 & Ia 92 over Over BNSF Rr/Sm Stream is a steel continuous stringer/multi-beam or girder carrying US 275 & Ia 92 over Over BNSF Rr/Sm Stream in Pottawattamie County, Iowa. It was built in 1968, so it is 57 years old, older 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 5,050 vehicles a day, roughly 10% of them trucks, projected to reach 5,050 by 2043. The structure is 312 ft (95.1 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesUS 275 & Ia 92
CrossesOver BNSF Rr/Sm Stream
Location0.4 Mi. N of N JCT I-29
RouteU.S. Route 275
CountyPottawattamie County
StateIowa
Coordinates41.21814, -95.83932
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating53.9 US tons
Inventory rating32.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length312 ft (95.1 m)
Longest span86 ft (26.2 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,050 (2022)
Projected traffic5,050 by 2043
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 US 275 & Ia 92 over Over BNSF Rr/Sm Stream built?

It was built in 1968, making it 57 years old in 2025.

What condition is US 275 & Ia 92 over Over BNSF Rr/Sm Stream 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 July 2023.

How much traffic does US 275 & Ia 92 over Over BNSF Rr/Sm Stream carry?

About 5,050 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is US 275 & Ia 92 over Over BNSF Rr/Sm Stream?

The structure is 312 ft (95.1 m) long with a longest span of 86 ft (26.2 m) and a deck 35 ft wide.

Who owns US 275 & Ia 92 over Over BNSF Rr/Sm Stream?

It is owned by the State Highway Agency.