US Bridges

East 16th ST over Lake Peosta Channel

Fair

Dubuque County, Iowa · 000000000 · Structure no. 000000000605410

Built
1982
43 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
347 ft
5 main spans
Daily traffic
9,191
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

East 16th ST over Lake Peosta Channel is a steel continuous stringer/multi-beam or girder carrying East 16th ST over Lake Peosta Channel in Dubuque County, Iowa. It was built in 1982, so it is 43 years old, younger 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 9,191 vehicles a day, roughly 5% of them trucks, projected to reach 9,191 by 2043. The structure is 347 ft (105.8 m) long and 60 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesEast 16th ST
CrossesLake Peosta Channel
Location000000000
RouteCity Street 0
CountyDubuque County
StateIowa
Coordinates42.51242, -90.65347
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length347 ft (105.8 m)
Longest span80 ft (24.4 m)
Deck width60 ft (18.3 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,191 (2022)
Projected traffic9,191 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was East 16th ST over Lake Peosta Channel built?

It was built in 1982, making it 43 years old in 2025.

What condition is East 16th ST over Lake Peosta Channel 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 August 2023.

How much traffic does East 16th ST over Lake Peosta Channel carry?

About 9,191 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is East 16th ST over Lake Peosta Channel?

The structure is 347 ft (105.8 m) long with a longest span of 80 ft (24.4 m) and a deck 60 ft wide.

Who owns East 16th ST over Lake Peosta Channel?

It is owned by the City or Municipal Highway Agency.