US Bridges

90th St. over Small Stream

PoorPosted for load

Fayette County, Iowa · 092082901 · Structure no. 000000000150341

Built
1990
35 years old
Condition
Poor
inspected October 2023
Type
Culvert
Steel
Length
23 ft
2 main spans
Daily traffic
34
2022 count
Owner
County
County Highway Agency

About this bridge

90th St. over Small Stream is a steel culvert carrying 90th St. over Small Stream in Fayette County, Iowa. It was built in 1990, so it is 35 years old, younger 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 load restriction.

It carries about 34 vehicles a day, roughly 6% of them trucks, projected to reach 34 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries90th St.
CrossesSmall Stream
Location092082901
RouteCounty Highway 0
CountyFayette County
StateIowa
Coordinates42.75979, -91.81098
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)
Projected traffic34 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost$290,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 90th St. over Small Stream built?

It was built in 1990, making it 35 years old in 2025.

What condition is 90th St. over Small Stream 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 October 2023.

How much traffic does 90th St. over Small Stream carry?

About 34 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is 90th St. over Small Stream?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m).

Who owns 90th St. over Small Stream?

It is owned by the County Highway Agency.