US Bridges

Main ST over Wolf Creek

Fair

Grundy County, Iowa · 086173201 · Structure no. 000000000002491

Built
1999
26 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
148 ft
3 main spans
Daily traffic
625
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Wolf Creek is a concrete continuous slab carrying Main ST over Wolf Creek in Grundy County, Iowa. It was built in 1999, so it is 26 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 6 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 625 vehicles a day, projected to reach 625 by 2043. The structure is 148 ft (45.1 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMain ST
CrossesWolf Creek
Location086173201
RouteCity Street 0
CountyGrundy County
StateIowa
Coordinates42.2219, -92.87451
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating62.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length148 ft (45.1 m)
Longest span56 ft (17.1 m)
Deck width41 ft (12.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic625 (2022)
Projected traffic625 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$22,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over Wolf Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Main ST over Wolf 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 April 2023.

How much traffic does Main ST over Wolf Creek carry?

About 625 vehicles per day (2022 count).

How long is Main ST over Wolf Creek?

The structure is 148 ft (45.1 m) long with a longest span of 56 ft (17.1 m) and a deck 41 ft wide.

Who owns Main ST over Wolf Creek?

It is owned by the City or Municipal Highway Agency.