US Bridges

S25 Heather Ave over Dd No 6

Good

Franklin County, Iowa · 90210502 · Structure no. 000000000156601

Built
2013
12 years old
Condition
Good
inspected June 2021
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
697
2022 count
Owner
County
County Highway Agency

About this bridge

S25 Heather Ave over Dd No 6 is a concrete continuous culvert carrying S25 Heather Ave over Dd No 6 in Franklin County, Iowa. It was built in 2013, so it is 12 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 697 vehicles a day, roughly 36% of them trucks, projected to reach 697 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS25 Heather Ave
CrossesDd No 6
Location90210502
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.63279, -93.36026
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 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 traffic697 (2022)
Projected traffic697 by 2043
Trucks36%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S25 Heather Ave over Dd No 6 built?

It was built in 2013, making it 12 years old in 2025.

What condition is S25 Heather Ave over Dd No 6 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2021.

How much traffic does S25 Heather Ave over Dd No 6 carry?

About 697 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is S25 Heather Ave over Dd No 6?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m).

Who owns S25 Heather Ave over Dd No 6?

It is owned by the County Highway Agency.