US Bridges

Loc Harrison Av over Small Stream

FairPosted for load

Buchanan County, Iowa · 090090502 · Structure no. 000000000083840

Built
1959
66 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
73
2022 count
Owner
County
County Highway Agency

About this bridge

Loc Harrison Av over Small Stream is a concrete continuous slab carrying Loc Harrison Av over Small Stream in Buchanan County, Iowa. It was built in 1959, so it is 66 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for other load-capacity restriction.

It carries about 73 vehicles a day, projected to reach 73 by 2043. The structure is 78 ft (23.8 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLoc Harrison Av
CrossesSmall Stream
Location090090502
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.63767, -91.94325
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating21.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length78 ft (23.8 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2022)
Projected traffic73 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loc Harrison Av over Small Stream built?

It was built in 1959, making it 66 years old in 2025.

What condition is Loc Harrison Av over Small Stream 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 December 2023.

How much traffic does Loc Harrison Av over Small Stream carry?

About 73 vehicles per day (2022 count).

How long is Loc Harrison Av over Small Stream?

The structure is 78 ft (23.8 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns Loc Harrison Av over Small Stream?

It is owned by the County Highway Agency.