US Bridges

Local RD over D D #2

Good

Humboldt County, Iowa · 091293001 · Structure no. 000000000184571

Built
1978
47 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

Local RD over D D #2 is a concrete continuous culvert carrying Local RD over D D #2 in Humboldt County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 26 vehicles a day, projected to reach 26 by 2044. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLocal RD
CrossesD D #2
Location091293001
RouteCounty Highway 0
StateIowa
Coordinates42.67389, -94.31985
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
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 alignment7: Better than present minimum criteria
Operating rating45.5 US tons
Inventory rating27.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2044
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 RD over D D #2 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Local RD over D D #2 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Local RD over D D #2 carry?

About 26 vehicles per day (2022 count).

How long is Local RD over D D #2?

The structure is 31 ft (9.4 m) long with a longest span of 14 ft (4.3 m).

Who owns Local RD over D D #2?

It is owned by the County Highway Agency.