US Bridges

College RD over Mosquito Creek

Fair

Pottawattamie County, Iowa · 000000000 · Structure no. 000000000002658

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
230 ft
3 main spans
Daily traffic
644
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

College RD over Mosquito Creek is a prestressed concrete stringer/multi-beam or girder carrying College RD over Mosquito Creek in Pottawattamie County, Iowa. It was built in 1980, so it is 45 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 644 vehicles a day, projected to reach 644 by 2043. The structure is 230 ft (70.1 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCollege RD
CrossesMosquito Creek
Location000000000
RouteCity Street 0
CountyPottawattamie County
StateIowa
Coordinates41.26895, -95.80766
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.4 US tons
Inventory rating34.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span81 ft (24.7 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic644 (2022)
Projected traffic644 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 College RD over Mosquito Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is College RD over Mosquito Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does College RD over Mosquito Creek carry?

About 644 vehicles per day (2022 count).

How long is College RD over Mosquito Creek?

The structure is 230 ft (70.1 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.

Who owns College RD over Mosquito Creek?

It is owned by the City or Municipal Highway Agency.