US Bridges

R30 150th Ave over East Fork Big Creek

Good

Decatur County, Iowa · 068273602 · Structure no. 000000000137711

Built
2017
8 years old
Condition
Good
inspected November 2020
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
210
2022 count
Owner
County
County Highway Agency

About this bridge

R30 150th Ave over East Fork Big Creek is a concrete continuous culvert carrying R30 150th Ave over East Fork Big Creek in Decatur County, Iowa. It was built in 2017, so it is 8 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 210 vehicles a day, projected to reach 210 by 2043. The structure is 21 ft (6.4 m) long.

CarriesR30 150th Ave
CrossesEast Fork Big Creek
Location068273602
RouteCounty Highway 0
StateIowa
Coordinates40.64178, -93.92001
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 inspectionNovember 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72.5 US tons
Inventory rating56.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2022)
Projected traffic210 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 R30 150th Ave over East Fork Big Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is R30 150th Ave over East Fork Big Creek 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 November 2020.

How much traffic does R30 150th Ave over East Fork Big Creek carry?

About 210 vehicles per day (2022 count).

How long is R30 150th Ave over East Fork Big Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns R30 150th Ave over East Fork Big Creek?

It is owned by the County Highway Agency.