US Bridges

Sycamore Avenue over Stream

Fair

Adams County, Iowa · 071320802 · Structure no. 000000000013360

Built
1967
58 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
33 ft
2 main spans
Daily traffic
1,404
2022 count
Owner
County
County Highway Agency

About this bridge

Sycamore Avenue over Stream is a concrete continuous culvert carrying Sycamore Avenue over Stream in Adams County, Iowa. It was built in 1967, so it is 58 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.

It carries about 1,404 vehicles a day, roughly 18% of them trucks, projected to reach 1,404 by 2044. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesSycamore Avenue
CrossesStream
Location071320802
RouteCounty Highway 0
CountyAdams County
StateIowa
Coordinates40.95995, -94.56584
Functional classRural 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating28.8 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,404 (2022)
Projected traffic1,404 by 2044
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 Sycamore Avenue over Stream built?

It was built in 1967, making it 58 years old in 2025.

What condition is Sycamore Avenue over 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 January 2024.

How much traffic does Sycamore Avenue over Stream carry?

About 1,404 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Sycamore Avenue over Stream?

The structure is 33 ft (10.1 m) long with a longest span of 16 ft (4.9 m).

Who owns Sycamore Avenue over Stream?

It is owned by the County Highway Agency.