US Bridges

FM over Dowd Creek Branch

Fair

Grundy County, Iowa · 086182001 · Structure no. 000000000163820

Built
1965
60 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
30 ft
3 main spans
Daily traffic
187
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Dowd Creek Branch is a concrete continuous culvert carrying FM over Dowd Creek Branch in Grundy County, Iowa. It was built in 1965, so it is 60 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 5 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 187 vehicles a day, roughly 18% of them trucks, projected to reach 187 by 2044. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM
CrossesDowd Creek Branch
Location086182001
RouteCounty Highway 0
CountyGrundy County
StateIowa
Coordinates42.25296, -92.97887
Functional classRural Major Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.1 US tons
Inventory rating31.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length30 ft (9.1 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 traffic187 (2022)
Projected traffic187 by 2044
Trucks18%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Dowd Creek Branch built?

It was built in 1965, making it 60 years old in 2025.

What condition is FM over Dowd Creek Branch 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 April 2024.

How much traffic does FM over Dowd Creek Branch carry?

About 187 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is FM over Dowd Creek Branch?

The structure is 30 ft (9.1 m) long with a longest span of 9 ft (2.7 m).

Who owns FM over Dowd Creek Branch?

It is owned by the County Highway Agency.