US Bridges

2nd ST over Lyon Creek

Fair

Hamilton County, Iowa · 000000000 · Structure no. 000000000026381

Built
1978
47 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
2,735
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

2nd ST over Lyon Creek is a concrete continuous slab carrying 2nd ST over Lyon Creek in Hamilton County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,735 vehicles a day, projected to reach 2,735 by 2044. The structure is 90 ft (27.4 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries2nd ST
CrossesLyon Creek
Location000000000
RouteCity Street 0
CountyHamilton County
StateIowa
Coordinates42.46937, -93.8053
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span35 ft (10.7 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,735 (2022)
Projected traffic2,735 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 2nd ST over Lyon Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is 2nd ST over Lyon Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does 2nd ST over Lyon Creek carry?

About 2,735 vehicles per day (2022 count).

How long is 2nd ST over Lyon Creek?

The structure is 90 ft (27.4 m) long with a longest span of 35 ft (10.7 m) and a deck 35 ft wide.

Who owns 2nd ST over Lyon Creek?

It is owned by the City or Municipal Highway Agency.