US Bridges

I 29 SB over Mosquito Ck II RR Path

Good

Pottawattamie County, Iowa · 0.4 Mi. S of Jct. US 275 · Structure no. 000000000044611

Built
2016
9 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,056 ft
5 main spans
Daily traffic
10,200
2022 count
Owner
State
State Highway Agency

About this bridge

I 29 SB over Mosquito Ck II RR Path is a steel continuous stringer/multi-beam or girder carrying I 29 SB over Mosquito Ck II RR Path in Pottawattamie County, Iowa. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,200 vehicles a day, roughly 24% of them trucks, projected to reach 10,200 by 2044. The structure is 1,056 ft (321.9 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 29 SB
CrossesMosquito Ck II RR Path
Location0.4 Mi. S of Jct. US 275
RouteInterstate 29
StateIowa
Coordinates41.21781, -95.82928
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating37.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length1,056 ft (321.9 m)
Longest span230 ft (70.1 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,200 (2022)
Projected traffic10,200 by 2044
Trucks24%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 29 SB over Mosquito Ck II RR Path built?

It was built in 2016, making it 9 years old in 2025.

What condition is I 29 SB over Mosquito Ck II RR Path 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 August 2024.

How much traffic does I 29 SB over Mosquito Ck II RR Path carry?

About 10,200 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is I 29 SB over Mosquito Ck II RR Path?

The structure is 1,056 ft (321.9 m) long with a longest span of 230 ft (70.1 m) and a deck 63 ft wide.

Who owns I 29 SB over Mosquito Ck II RR Path?

It is owned by the State Highway Agency.