US Bridges

Ia 92 over Main ST & Collins RD

Fair

Louisa County, Iowa · 0.3 MI W of Jct. Ia 70 · Structure no. 000000000034111

Built
1995
30 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
502 ft
6 main spans
Daily traffic
3,170
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 92 over Main ST & Collins RD is a prestressed concrete stringer/multi-beam or girder carrying Ia 92 over Main ST & Collins RD in Louisa County, Iowa. It was built in 1995, so it is 30 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 3,170 vehicles a day, roughly 27% of them trucks, projected to reach 3,170 by 2043. The structure is 502 ft (153 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIa 92
CrossesMain ST & Collins RD
Location0.3 MI W of Jct. Ia 70
RouteState Highway 92
CountyLouisa County
StateIowa
Coordinates41.27894, -91.36132
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.4 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length502 ft (153 m)
Longest span97 ft (29.6 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,170 (2023)
Projected traffic3,170 by 2043
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ia 92 over Main ST & Collins RD built?

It was built in 1995, making it 30 years old in 2025.

What condition is Ia 92 over Main ST & Collins RD 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 February 2024.

How much traffic does Ia 92 over Main ST & Collins RD carry?

About 3,170 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is Ia 92 over Main ST & Collins RD?

The structure is 502 ft (153 m) long with a longest span of 97 ft (29.6 m) and a deck 35 ft wide.

Who owns Ia 92 over Main ST & Collins RD?

It is owned by the State Highway Agency.