US Bridges

Mt Vernon RD over Wanatee Creek

Fair

Linn County, Iowa · 083062909 · Structure no. 000000000220840

Built
1969
56 years old, rebuilt 2022
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
94 ft
3 main spans
Daily traffic
7,169
2022 count
Owner
County
County Highway Agency

About this bridge

Mt Vernon RD over Wanatee Creek is a concrete continuous slab carrying Mt Vernon RD over Wanatee Creek in Linn County, Iowa. It was built in 1969 and reconstructed in 2022, so it is 56 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 7,169 vehicles a day, projected to reach 7,169 by 2044. The structure is 94 ft (28.7 m) long and 63 ft wide.

Location

Open in Google Maps
CarriesMt Vernon RD
CrossesWanatee Creek
Location083062909
RouteCounty Highway 0
CountyLinn County
StateIowa
Coordinates41.97622, -91.56136
Functional classUrban Other Principal 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length94 ft (28.7 m)
Longest span36 ft (11 m)
Deck width63 ft (19.2 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,169 (2022)
Projected traffic7,169 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Vernon RD over Wanatee Creek built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2022.

What condition is Mt Vernon RD over Wanatee Creek 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 September 2024.

How much traffic does Mt Vernon RD over Wanatee Creek carry?

About 7,169 vehicles per day (2022 count).

How long is Mt Vernon RD over Wanatee Creek?

The structure is 94 ft (28.7 m) long with a longest span of 36 ft (11 m) and a deck 63 ft wide.

Who owns Mt Vernon RD over Wanatee Creek?

It is owned by the County Highway Agency.