US Bridges

Local Linn-Del over Stream

Fair

Delaware County, Iowa · 087053101 · Structure no. 000000000140011

Built
1975
50 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
59
2022 count
Owner
County
County Highway Agency

About this bridge

Local Linn-Del over Stream is a concrete culvert carrying Local Linn-Del over Stream in Delaware County, Iowa. It was built in 1975, so it is 50 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 59 vehicles a day, projected to reach 59 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLocal Linn-Del
CrossesStream
Location087053101
RouteCounty Highway 0
CountyDelaware County
StateIowa
Coordinates42.31078, -91.47256
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2022)
Projected traffic59 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local Linn-Del over Stream built?

It was built in 1975, making it 50 years old in 2025.

What condition is Local Linn-Del 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 May 2023.

How much traffic does Local Linn-Del over Stream carry?

About 59 vehicles per day (2022 count).

How long is Local Linn-Del over Stream?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m).

Who owns Local Linn-Del over Stream?

It is owned by the County Highway Agency.