US Bridges

300th St. over Quinn Creek

PoorPosted for load

Fayette County, Iowa · 095070703 · Structure no. 000000000152701

Built
1997
28 years old
Condition
Poor
inspected October 2023
Type
Culvert
Steel
Length
33 ft
3 main spans
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

300th St. over Quinn Creek is a steel culvert carrying 300th St. over Quinn Creek in Fayette County, Iowa. It was built in 1997, so it is 28 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 29 vehicles a day, projected to reach 29 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries300th St.
CrossesQuinn Creek
Location095070703
RouteCounty Highway 0
CountyFayette County
StateIowa
Coordinates43.06544, -91.72188
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating35.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 300th St. over Quinn Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is 300th St. over Quinn Creek 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 300th St. over Quinn Creek carry?

About 29 vehicles per day (2022 count).

How long is 300th St. over Quinn Creek?

The structure is 33 ft (10.1 m) long with a longest span of 9 ft (2.7 m).

Who owns 300th St. over Quinn Creek?

It is owned by the County Highway Agency.