US Bridges

277th Ave over Mccarty Creek

Good

Scott County, Iowa · 079E52706 · Structure no. 000000000302991

Built
2020
5 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
660
2022 count
Owner
County
County Highway Agency

About this bridge

277th Ave over Mccarty Creek is a prestressed concrete stringer/multi-beam or girder carrying 277th Ave over Mccarty Creek in Scott County, Iowa. It was built in 2020, so it is 5 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 660 vehicles a day, roughly 15% of them trucks, projected to reach 660 by 2044. The structure is 71 ft (21.6 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries277th Ave
CrossesMccarty Creek
Location079E52706
RouteCounty Highway 0
StateIowa
Coordinates41.6166, -90.35884
Functional classRural Local

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.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.6 US tons
Inventory rating52.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length71 ft (21.6 m)
Longest span68 ft (20.6 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2022)
Projected traffic660 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 277th Ave over Mccarty Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is 277th Ave over Mccarty 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 April 2024.

How much traffic does 277th Ave over Mccarty Creek carry?

About 660 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 277th Ave over Mccarty Creek?

The structure is 71 ft (21.6 m) long with a longest span of 68 ft (20.6 m) and a deck 33 ft wide.

Who owns 277th Ave over Mccarty Creek?

It is owned by the County Highway Agency.