US Bridges

Univ Ave over Keosauqua

Fair

Polk County, Iowa · 078240500 · Structure no. 000000000003773

Built
1987
38 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
13,517
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Univ Ave over Keosauqua is a prestressed concrete stringer/multi-beam or girder carrying Univ Ave over Keosauqua in Polk County, Iowa. It was built in 1987, so it is 38 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 13,517 vehicles a day, projected to reach 13,517 by 2043. The structure is 106 ft (32.3 m) long and 69 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUniv Ave
CrossesKeosauqua
Location078240500
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.60043, -93.63872
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment7: Better than present minimum criteria
Operating rating92.8 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span102 ft (31.1 m)
Deck width69 ft (21 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,517 (2022)
Projected traffic13,517 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$17,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Univ Ave over Keosauqua built?

It was built in 1987, making it 38 years old in 2025.

What condition is Univ Ave over Keosauqua 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 July 2023.

How much traffic does Univ Ave over Keosauqua carry?

About 13,517 vehicles per day (2022 count).

How long is Univ Ave over Keosauqua?

The structure is 106 ft (32.3 m) long with a longest span of 102 ft (31.1 m) and a deck 69 ft wide.

Who owns Univ Ave over Keosauqua?

It is owned by the City or Municipal Highway Agency.