US Bridges

SR V51 over U.S. 20

Good

Black Hawk County, Iowa · At Jct. SR V51 · Structure no. 000000000604950

Built
1980
45 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
268 ft
4 main spans
Daily traffic
1,748
2022 count
Owner
State
State Highway Agency

About this bridge

SR V51 over U.S. 20 is a prestressed concrete stringer/multi-beam or girder carrying SR V51 over U.S. 20 in Black Hawk 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 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 1,748 vehicles a day, roughly 11% of them trucks, projected to reach 1,748 by 2044. The structure is 268 ft (81.7 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR V51
CrossesU.S. 20
LocationAt Jct. SR V51
RouteCounty Highway 0
StateIowa
Coordinates42.44962, -92.16184
Functional classRural Major Collector

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.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99.8 US tons
Inventory rating44.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length268 ft (81.7 m)
Longest span92 ft (28 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,748 (2022)
Projected traffic1,748 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR V51 over U.S. 20 built?

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

What condition is SR V51 over U.S. 20 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 January 2024.

How much traffic does SR V51 over U.S. 20 carry?

About 1,748 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is SR V51 over U.S. 20?

The structure is 268 ft (81.7 m) long with a longest span of 92 ft (28 m) and a deck 47 ft wide.

Who owns SR V51 over U.S. 20?

It is owned by the State Highway Agency.