US Bridges

Hidden Valley Lane over Stream

Good

Dubuque County, Iowa · 08802E2506 · Structure no. 000000000366710

Built
2021
4 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
128
2022 count
Owner
County
County Highway Agency

About this bridge

Hidden Valley Lane over Stream is a prestressed concrete tee beam carrying Hidden Valley Lane over Stream in Dubuque County, Iowa. It was built in 2021, so it is 4 years old, younger 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 128 vehicles a day, projected to reach 128 by 2042. The structure is 22 ft (6.7 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesHidden Valley Lane
CrossesStream
Location08802E2506
RouteCounty Highway 0
CountyDubuque County
StateIowa
Coordinates42.41125, -90.67618
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating35.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128 (2022)
Projected traffic128 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Hidden Valley Lane over Stream built?

It was built in 2021, making it 4 years old in 2025.

What condition is Hidden Valley Lane over Stream 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 2023.

How much traffic does Hidden Valley Lane over Stream carry?

About 128 vehicles per day (2022 count).

How long is Hidden Valley Lane over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 16 ft wide.

Who owns Hidden Valley Lane over Stream?

It is owned by the County Highway Agency.