US Bridges

I29NBNEBRASKASTRP over Ia 12 & Virginia ST

Good

Woodbury County, Iowa · I-29 Nebraska St. Ramp D · Structure no. 000000000700325

Built
2017
8 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
576 ft
3 main spans
Daily traffic
3,460
2022 count
Owner
State
State Highway Agency

About this bridge

I29NBNEBRASKASTRP over Ia 12 & Virginia ST is a steel continuous stringer/multi-beam or girder carrying I29NBNEBRASKASTRP over Ia 12 & Virginia ST in Woodbury County, Iowa. It was built in 2017, so it is 8 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 3,460 vehicles a day, roughly 2% of them trucks, projected to reach 3,460 by 2043. The structure is 576 ft (175.6 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI29NBNEBRASKASTRP
CrossesIa 12 & Virginia ST
LocationI-29 Nebraska St. Ramp D
RouteInterstate 29
CountyWoodbury County
StateIowa
Coordinates42.48822, -96.39769
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length576 ft (175.6 m)
Longest span203 ft (61.9 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,460 (2022)
Projected traffic3,460 by 2043
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I29NBNEBRASKASTRP over Ia 12 & Virginia ST built?

It was built in 2017, making it 8 years old in 2025.

What condition is I29NBNEBRASKASTRP over Ia 12 & Virginia ST 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 July 2023.

How much traffic does I29NBNEBRASKASTRP over Ia 12 & Virginia ST carry?

About 3,460 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is I29NBNEBRASKASTRP over Ia 12 & Virginia ST?

The structure is 576 ft (175.6 m) long with a longest span of 203 ft (61.9 m) and a deck 29 ft wide.

Who owns I29NBNEBRASKASTRP over Ia 12 & Virginia ST?

It is owned by the State Highway Agency.