US Bridges

W Main ST over Dry Creek

Good

Linn County, Iowa · 600 Feet West of Troy RD · Structure no. 000000000009941

Built
2010
15 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
5,369
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Main ST over Dry Creek is a concrete continuous slab carrying W Main ST over Dry Creek in Linn County, Iowa. It was built in 2010, so it is 15 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,369 vehicles a day, projected to reach 5,369 by 2043. The structure is 130 ft (39.6 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesW Main ST
CrossesDry Creek
Location600 Feet West of Troy RD
RouteCity Street 0
StateIowa
Coordinates42.07264, -91.6701
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating58.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length130 ft (39.6 m)
Longest span51 ft (15.5 m)
Deck width47 ft (14.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,369 (2021)
Projected traffic5,369 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was W Main ST over Dry Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is W Main ST over Dry Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does W Main ST over Dry Creek carry?

About 5,369 vehicles per day (2021 count).

How long is W Main ST over Dry Creek?

The structure is 130 ft (39.6 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.

Who owns W Main ST over Dry Creek?

It is owned by the City or Municipal Highway Agency.