H28 146th Blvd over Burr Oak Creek

Good

Jefferson County, Iowa · 073082603 · Structure no. 000000000202001

Built: 2022; 3 years old
Condition: Good; inspected February 2023
Type: Slab; Concrete Continuous
Length: 121 ft; 3 main spans
Daily traffic: 100; 2022 count
Owner: County; County Highway Agency

About this bridge

H28 146th Blvd over Burr Oak Creek is a concrete continuous slab carrying H28 146th Blvd over Burr Oak Creek in Jefferson County, Iowa. It was built in 2022, so it is 3 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, projected to reach 100 by 2043. The structure is 121 ft (36.9 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesH28 146th Blvd

CrossesBurr Oak Creek

Location073082603

RouteCounty Highway 0

CountyJefferson County

StateIowa

Coordinates41.0968, -91.75405

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.

Component	Rating	Meaning
Deck	9 Excellent	No problems noted.
Superstructure	9 Excellent	No problems noted.
Substructure	9 Excellent	No problems noted.
Channel and channel protection	8 Very Good	No problems noted.

Last inspectionFebruary 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation9: Superior to present desirable criteria

Deck geometry7: Better than present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating57.1 US tons

Inventory rating44 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHL 93

Structure length121 ft (36.9 m)

Longest span47 ft (14.3 m)

Deck width33 ft (10.1 m)

Roadway width31 ft (9.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)

Projected traffic100 by 2043

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed3.7 mi (6 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 H28 146th Blvd over Burr Oak Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is H28 146th Blvd over Burr Oak 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 February 2023.

How much traffic does H28 146th Blvd over Burr Oak Creek carry?

About 100 vehicles per day (2022 count).

How long is H28 146th Blvd over Burr Oak Creek?

The structure is 121 ft (36.9 m) long with a longest span of 47 ft (14.3 m) and a deck 33 ft wide.

Who owns H28 146th Blvd over Burr Oak Creek?

It is owned by the County Highway Agency.