US Bridges

Yarrow Ave over Boylan Creek

Fair

Franklin County, Iowa · 093191302 · Structure no. 000000000158001

Built
1978
47 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

Yarrow Ave over Boylan Creek is a concrete continuous culvert carrying Yarrow Ave over Boylan Creek in Franklin County, Iowa. It was built in 1978, so it is 47 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 10 vehicles a day, projected to reach 10 by 2044. The structure is 45 ft (13.6 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesYarrow Ave
CrossesBoylan Creek
Location093191302
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.87669, -93.04512
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.7 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length45 ft (13.6 m)
Longest span14 ft (4.3 m)
Deck width64 ft (19.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Yarrow Ave over Boylan Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Yarrow Ave over Boylan Creek 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 June 2024.

How much traffic does Yarrow Ave over Boylan Creek carry?

About 10 vehicles per day (2022 count).

How long is Yarrow Ave over Boylan Creek?

The structure is 45 ft (13.6 m) long with a longest span of 14 ft (4.3 m) and a deck 64 ft wide.

Who owns Yarrow Ave over Boylan Creek?

It is owned by the County Highway Agency.