US Bridges

Vandalia RD over Drainage

Good

Polk County, Iowa · 078231600 · Structure no. 000000000009551

Built
1996
29 years old
Condition
Good
inspected June 2021
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
2,393
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Vandalia RD over Drainage is a concrete continuous culvert carrying Vandalia RD over Drainage in Polk County, Iowa. It was built in 1996, so it is 29 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 2,393 vehicles a day, roughly 7% of them trucks, projected to reach 2,393 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesVandalia RD
CrossesDrainage
Location078231600
RouteCity Street 0
StateIowa
Coordinates41.56784, -93.51301
Functional classUrban Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable 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 spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,393 (2022)
Projected traffic2,393 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Vandalia RD over Drainage built?

It was built in 1996, making it 29 years old in 2025.

What condition is Vandalia RD over Drainage 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 June 2021.

How much traffic does Vandalia RD over Drainage carry?

About 2,393 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Vandalia RD over Drainage?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns Vandalia RD over Drainage?

It is owned by the City or Municipal Highway Agency.