US Bridges

Loc 450th ST over Middle Branch Blue Earth

Good

Kossuth County, Iowa · 099270701 · Structure no. 000000000216791

Built
2001
24 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
81
2022 count
Owner
County
County Highway Agency

About this bridge

Loc 450th ST over Middle Branch Blue Earth is a concrete continuous slab carrying Loc 450th ST over Middle Branch Blue Earth in Kossuth County, Iowa. It was built in 2001, so it is 24 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 81 vehicles a day, projected to reach 81 by 2043. The structure is 91 ft (27.6 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLoc 450th ST
CrossesMiddle Branch Blue Earth
Location099270701
RouteCounty Highway 0
CountyKossuth County
StateIowa
Coordinates43.41442, -94.0702
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.3 US tons
Inventory rating49.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length91 ft (27.6 m)
Longest span34 ft (10.4 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81 (2022)
Projected traffic81 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loc 450th ST over Middle Branch Blue Earth built?

It was built in 2001, making it 24 years old in 2025.

What condition is Loc 450th ST over Middle Branch Blue Earth 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 May 2023.

How much traffic does Loc 450th ST over Middle Branch Blue Earth carry?

About 81 vehicles per day (2022 count).

How long is Loc 450th ST over Middle Branch Blue Earth?

The structure is 91 ft (27.6 m) long with a longest span of 34 ft (10.4 m) and a deck 27 ft wide.

Who owns Loc 450th ST over Middle Branch Blue Earth?

It is owned by the County Highway Agency.