US Bridges

R 16 (r Ave) over I-80

Fair

Dallas County, Iowa · 3.1 Miles East of JCT 169 · Structure no. 000000000022350

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
228 ft
4 main spans
Daily traffic
2,330
2022 count
Owner
State
State Highway Agency

About this bridge

R 16 (r Ave) over I-80 is a prestressed concrete stringer/multi-beam or girder carrying R 16 (r Ave) over I-80 in Dallas County, Iowa. It was built in 1966, so it is 59 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,330 vehicles a day, roughly 3% of them trucks, projected to reach 2,330 by 2043. The structure is 228 ft (69.5 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesR 16 (r Ave)
CrossesI-80
Location3.1 Miles East of JCT 169
RouteCounty Highway 0
CountyDallas County
StateIowa
Coordinates41.54769, -93.95347
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.7 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length228 ft (69.5 m)
Longest span69 ft (21 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,330 (2022)
Projected traffic2,330 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed9.9 mi (16 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 R 16 (r Ave) over I-80 built?

It was built in 1966, making it 59 years old in 2025.

What condition is R 16 (r Ave) over I-80 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does R 16 (r Ave) over I-80 carry?

About 2,330 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is R 16 (r Ave) over I-80?

The structure is 228 ft (69.5 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns R 16 (r Ave) over I-80?

It is owned by the State Highway Agency.