US Bridges

North ST over Dry Creek

Fair

Linn County, Iowa · 000000000 · Structure no. 000000000222400

Built
1959
66 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
48 ft
3 main spans
Daily traffic
530
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

North ST over Dry Creek is a concrete continuous culvert carrying North ST over Dry Creek in Linn 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.

It carries about 530 vehicles a day, roughly 20% of them trucks, projected to reach 530 by 2043. The structure is 48 ft (14.6 m) long.

Location

Open in Google Maps
CarriesNorth ST
CrossesDry Creek
Location000000000
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates42.15309, -91.61394
Functional classRural Major Collector

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 inspectionMarch 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.7 US tons
Inventory rating28.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length48 ft (14.6 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic530 (2021)
Projected traffic530 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 North ST over Dry Creek built?

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

What condition is North ST over Dry 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 March 2023.

How much traffic does North ST over Dry Creek carry?

About 530 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is North ST over Dry Creek?

The structure is 48 ft (14.6 m) long with a longest span of 15 ft (4.6 m).

Who owns North ST over Dry Creek?

It is owned by the City or Municipal Highway Agency.