US Bridges

Local 270th ST over Smith CR

Good

Buchanan County, Iowa · 088083601 · Structure no. 000000000082161

Built
2004
21 years old
Condition
Good
inspected December 2022
Type
Other
Steel
Length
68 ft
1 main span
Daily traffic
70
2013 count
Owner
County
County Highway Agency

About this bridge

Local 270th ST over Smith CR is a steel other carrying Local 270th ST over Smith CR in Buchanan County, Iowa. It was built in 2004, so it is 21 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 70 vehicles a day, projected to reach 70 by 2043. The structure is 68 ft (20.7 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLocal 270th ST
CrossesSmith CR
Location088083601
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.39908, -91.73185
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.5 US tons
Inventory rating27 US tons

Structure

Structure typeOther
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span66 ft (20.1 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2013)
Projected traffic70 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Local 270th ST over Smith CR built?

It was built in 2004, making it 21 years old in 2025.

What condition is Local 270th ST over Smith CR 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 December 2022.

How much traffic does Local 270th ST over Smith CR carry?

About 70 vehicles per day (2013 count).

How long is Local 270th ST over Smith CR?

The structure is 68 ft (20.7 m) long with a longest span of 66 ft (20.1 m) and a deck 28 ft wide.

Who owns Local 270th ST over Smith CR?

It is owned by the County Highway Agency.