US Bridges

Wren Ave over Hartgraves CR

Fair

Franklin County, Iowa · 092192604 · Structure no. 000000000157401

Built
1977
48 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
219 ft
3 main spans
Daily traffic
62
2022 count
Owner
County
County Highway Agency

About this bridge

Wren Ave over Hartgraves CR is a prestressed concrete stringer/multi-beam or girder carrying Wren Ave over Hartgraves CR in Franklin County, Iowa. It was built in 1977, so it is 48 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 62 vehicles a day, projected to reach 62 by 2044. The structure is 219 ft (66.8 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWren Ave
CrossesHartgraves CR
Location092192604
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.75089, -93.05534
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.3 US tons
Inventory rating18.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length219 ft (66.8 m)
Longest span81 ft (24.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62 (2022)
Projected traffic62 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Wren Ave over Hartgraves CR built?

It was built in 1977, making it 48 years old in 2025.

What condition is Wren Ave over Hartgraves CR 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 Wren Ave over Hartgraves CR carry?

About 62 vehicles per day (2022 count).

How long is Wren Ave over Hartgraves CR?

The structure is 219 ft (66.8 m) long with a longest span of 81 ft (24.7 m) and a deck 26 ft wide.

Who owns Wren Ave over Hartgraves CR?

It is owned by the County Highway Agency.