US Bridges

Killdeer Ave over Drainage Ditch No 6

Poor

Franklin County, Iowa · 090211102 · Structure no. 000000000156671

Built
1956
69 years old, rebuilt 1970
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
16
2022 count
Owner
County
County Highway Agency

About this bridge

Killdeer Ave over Drainage Ditch No 6 is a prestressed concrete stringer/multi-beam or girder carrying Killdeer Ave over Drainage Ditch No 6 in Franklin County, Iowa. It was built in 1956 and reconstructed in 1970, so it is 69 years old, older 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.

It carries about 16 vehicles a day, projected to reach 16 by 2044. The structure is 44 ft (13.4 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKilldeer Ave
CrossesDrainage Ditch No 6
Location090211102
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.62502, -93.30144
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.5 US tons
Inventory rating27.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (2022)
Projected traffic16 by 2044
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Killdeer Ave over Drainage Ditch No 6 built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1970.

What condition is Killdeer Ave over Drainage Ditch No 6 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 June 2024.

How much traffic does Killdeer Ave over Drainage Ditch No 6 carry?

About 16 vehicles per day (2022 count).

How long is Killdeer Ave over Drainage Ditch No 6?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 22 ft wide.

Who owns Killdeer Ave over Drainage Ditch No 6?

It is owned by the County Highway Agency.