US Bridges

Local over Linn Creek

Good

Marshall County, Iowa · 084203601 · Structure no. 000000000243931

Built
1999
26 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete Continuous
Length
112 ft
3 main spans
Daily traffic
51
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Linn Creek is a concrete continuous slab carrying Local over Linn Creek in Marshall County, Iowa. It was built in 1999, so it is 26 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 51 vehicles a day, projected to reach 51 by 2043. The structure is 112 ft (34.1 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLocal
CrossesLinn Creek
Location084203601
RouteCounty Highway 0
StateIowa
Coordinates42.04844, -93.12599
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 protection7 GoodSome minor problems.
Last inspectionNovember 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating91.8 US tons
Inventory rating54.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length112 ft (34.1 m)
Longest span44 ft (13.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2022)
Projected traffic51 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$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Linn Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Local over Linn 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 2023.

How much traffic does Local over Linn Creek carry?

About 51 vehicles per day (2022 count).

How long is Local over Linn Creek?

The structure is 112 ft (34.1 m) long with a longest span of 44 ft (13.4 m) and a deck 24 ft wide.

Who owns Local over Linn Creek?

It is owned by the County Highway Agency.