US Bridges

E Hamilton ST over Small Stream

PoorPosted for load

Chickasaw County, Iowa · 095120700 · Structure no. 000000000008570

Built
1980
45 years old
Condition
Poor
inspected March 2024
Type
Channel Beam
Concrete
Length
25 ft
1 main span
Daily traffic
937
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

E Hamilton ST over Small Stream is a concrete channel beam carrying E Hamilton ST over Small Stream in Chickasaw County, Iowa. It was built in 1980, so it is 45 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 937 vehicles a day, projected to reach 937 by 2044. The structure is 25 ft (7.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE Hamilton ST
CrossesSmall Stream
Location095120700
RouteCity Street 0
StateIowa
Coordinates43.05756, -92.30923
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating21.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width41 ft (12.5 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic937 (2022)
Projected traffic937 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was E Hamilton ST over Small Stream built?

It was built in 1980, making it 45 years old in 2025.

What condition is E Hamilton ST over Small Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does E Hamilton ST over Small Stream carry?

About 937 vehicles per day (2022 count).

How long is E Hamilton ST over Small Stream?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 41 ft wide.

Who owns E Hamilton ST over Small Stream?

It is owned by the City or Municipal Highway Agency.