US Bridges

C 29 (480th St) over Big Cedar Ck Dd #41

Good

Pocahontas County, Iowa · 092341401 · Structure no. 000000000279761

Built
2011
14 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
230
2022 count
Owner
County
County Highway Agency

About this bridge

C 29 (480th St) over Big Cedar Ck Dd #41 is a concrete continuous culvert carrying C 29 (480th St) over Big Cedar Ck Dd #41 in Pocahontas County, Iowa. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 230 vehicles a day, roughly 23% of them trucks, projected to reach 230 by 2044. The structure is 27 ft (8.2 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesC 29 (480th St)
CrossesBig Cedar Ck Dd #41
Location092341401
RouteCounty Highway 0
CountyPocahontas County
StateIowa
Coordinates42.79101, -94.82641
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.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width38 ft (11.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2022)
Projected traffic230 by 2044
Trucks23%
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 C 29 (480th St) over Big Cedar Ck Dd #41 built?

It was built in 2011, making it 14 years old in 2025.

What condition is C 29 (480th St) over Big Cedar Ck Dd #41 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 October 2024.

How much traffic does C 29 (480th St) over Big Cedar Ck Dd #41 carry?

About 230 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is C 29 (480th St) over Big Cedar Ck Dd #41?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 38 ft wide.

Who owns C 29 (480th St) over Big Cedar Ck Dd #41?

It is owned by the County Highway Agency.