US Bridges

277th ST over Clear Creek

Good

Marshall County, Iowa · 083203205 · Structure no. 000000000243061

Built
2021
4 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
16
2022 count
Owner
County
County Highway Agency

About this bridge

277th ST over Clear Creek is a concrete culvert carrying 277th ST over Clear Creek in Marshall County, Iowa. It was built in 2021, so it is 4 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 16 vehicles a day, projected to reach 16 by 2043. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries277th ST
CrossesClear Creek
Location083203205
RouteCounty Highway 0
CountyMarshall County
StateIowa
Coordinates41.95454, -93.21219
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (2022)
Projected traffic16 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 277th ST over Clear Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is 277th ST over Clear 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 November 2023.

How much traffic does 277th ST over Clear Creek carry?

About 16 vehicles per day (2022 count).

How long is 277th ST over Clear Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns 277th ST over Clear Creek?

It is owned by the County Highway Agency.