US Bridges

FM W-16 over I-80

FairPosted for load

Iowa County, Iowa · 2.1 Mi. E of Jct. Ia 149 · Structure no. 000000000029900

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
219 ft
4 main spans
Daily traffic
140
2022 count
Owner
State
State Highway Agency

About this bridge

FM W-16 over I-80 is a steel continuous girder and floorbeam system carrying FM W-16 over I-80 in Iowa County, Iowa. It was built in 1963, so it is 62 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. Its operating status is: posted for load restriction.

It carries about 140 vehicles a day, projected to reach 140 by 2043. The structure is 219 ft (66.8 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesFM W-16
CrossesI-80
Location2.1 Mi. E of Jct. Ia 149
RouteCounty Highway 0
CountyIowa County
StateIowa
Coordinates41.68671, -91.96894
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.8 US tons
Inventory rating19.7 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length219 ft (66.8 m)
Longest span62 ft (18.9 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2022)
Projected traffic140 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 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 FM W-16 over I-80 built?

It was built in 1963, making it 62 years old in 2025.

What condition is FM W-16 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 May 2023.

How much traffic does FM W-16 over I-80 carry?

About 140 vehicles per day (2022 count).

How long is FM W-16 over I-80?

The structure is 219 ft (66.8 m) long with a longest span of 62 ft (18.9 m) and a deck 28 ft wide.

Who owns FM W-16 over I-80?

It is owned by the State Highway Agency.