US Bridges

Tamarack Road over Over BNSF RR

Poor

Pottawattamie County, Iowa · 077411905 · Structure no. 000000000043580

Built
1930
95 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
159 ft
3 main spans
Daily traffic
1,325
2022 count
Owner
County
County Highway Agency

About this bridge

Tamarack Road over Over BNSF RR is a steel stringer/multi-beam or girder carrying Tamarack Road over Over BNSF RR in Pottawattamie County, Iowa. It was built in 1930, so it is 95 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 4 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.

It carries about 1,325 vehicles a day, roughly 12% of them trucks, projected to reach 1,325 by 2043. The structure is 159 ft (48.5 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesTamarack Road
CrossesOver BNSF RR
Location077411905
RouteCounty Highway 0
CountyPottawattamie County
StateIowa
Coordinates41.4608, -95.60683
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating52.7 US tons
Inventory rating26.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span52 ft (15.9 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,325 (2022)
Projected traffic1,325 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 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 Tamarack Road over Over BNSF RR built?

It was built in 1930, making it 95 years old in 2025.

What condition is Tamarack Road over Over BNSF 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 April 2024.

How much traffic does Tamarack Road over Over BNSF RR carry?

About 1,325 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Tamarack Road over Over BNSF RR?

The structure is 159 ft (48.5 m) long with a longest span of 52 ft (15.9 m) and a deck 27 ft wide.

Who owns Tamarack Road over Over BNSF RR?

It is owned by the County Highway Agency.