US Bridges

SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr

Good

Black Hawk County, Iowa · 1.2 Mi. S of Jct. US 218 · Structure no. 000000000607590

Built
1992
33 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
554 ft
5 main spans
Daily traffic
2,940
2022 count
Owner
State
State Highway Agency

About this bridge

SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr is a prestressed concrete stringer/multi-beam or girder carrying SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr in Black Hawk County, Iowa. It was built in 1992, so it is 33 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 2,940 vehicles a day, roughly 3% of them trucks, projected to reach 2,940 by 2043. The structure is 554 ft (168.9 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB Ia 27 Ramp
CrossesDry Run Crk & Cedar Rvr
Location1.2 Mi. S of Jct. US 218
RouteState Highway 27
StateIowa
Coordinates42.52608, -92.437
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.6 US tons
Inventory rating48.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length554 ft (168.9 m)
Longest span106 ft (32.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,940 (2022)
Projected traffic2,940 by 2043
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr built?

It was built in 1992, making it 33 years old in 2025.

What condition is SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr 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 July 2023.

How much traffic does SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr carry?

About 2,940 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr?

The structure is 554 ft (168.9 m) long with a longest span of 106 ft (32.3 m) and a deck 39 ft wide.

Who owns SB Ia 27 Ramp over Dry Run Crk & Cedar Rvr?

It is owned by the State Highway Agency.