US Bridges

Gilbertville RD over Poyner Creek

Good

Black Hawk County, Iowa · 88-12-10-04-10 · Structure no. 000000000075050

Built
1975
50 years old
Condition
Good
inspected May 2022
Type
Culvert
Concrete Continuous
Length
57 ft
3 main spans
Daily traffic
815
2022 count
Owner
County
County Highway Agency

About this bridge

Gilbertville RD over Poyner Creek is a concrete continuous culvert carrying Gilbertville RD over Poyner Creek in Black Hawk 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 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 815 vehicles a day, projected to reach 815 by 2043. The structure is 57 ft (17.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGilbertville RD
CrossesPoyner Creek
Location88-12-10-04-10
RouteCounty Highway 0
StateIowa
Coordinates42.447, -92.23255
Functional classUrban Collector

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 inspectionMay 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length57 ft (17.5 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic815 (2022)
Projected traffic815 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Gilbertville RD over Poyner Creek built?

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

What condition is Gilbertville RD over Poyner Creek 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 May 2022.

How much traffic does Gilbertville RD over Poyner Creek carry?

About 815 vehicles per day (2022 count).

How long is Gilbertville RD over Poyner Creek?

The structure is 57 ft (17.5 m) long with a longest span of 21 ft (6.4 m).

Who owns Gilbertville RD over Poyner Creek?

It is owned by the County Highway Agency.