US Bridges

Loc 150th ST over Otter CR

PoorPosted for load

Buchanan County, Iowa · 090093201 · Structure no. 000000000084080

Built
1953
72 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
203 ft
3 main spans
Daily traffic
130
2013 count
Owner
County
County Highway Agency

About this bridge

Loc 150th ST over Otter CR is a concrete continuous stringer/multi-beam or girder carrying Loc 150th ST over Otter CR in Buchanan County, Iowa. It was built in 1953, so it is 72 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. Its operating status is: posted for other load-capacity restriction.

It carries about 130 vehicles a day, projected to reach 130 by 2043. The structure is 203 ft (61.9 m) long and 23 ft wide.

Location

Open in Google Maps
CarriesLoc 150th ST
CrossesOtter CR
Location090093201
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.56995, -91.92648
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.1 US tons
Inventory rating9.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length203 ft (61.9 m)
Longest span80 ft (24.4 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2013)
Projected traffic130 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loc 150th ST over Otter CR built?

It was built in 1953, making it 72 years old in 2025.

What condition is Loc 150th ST over Otter CR 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 December 2024.

How much traffic does Loc 150th ST over Otter CR carry?

About 130 vehicles per day (2013 count).

How long is Loc 150th ST over Otter CR?

The structure is 203 ft (61.9 m) long with a longest span of 80 ft (24.4 m) and a deck 23 ft wide.

Who owns Loc 150th ST over Otter CR?

It is owned by the County Highway Agency.