US Bridges

Ia 149 over North Fork English River

Good

Iowa County, Iowa · 0.8 Mi. S of SR V66 · Structure no. 000000000029451

Built
1987
38 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
281 ft
3 main spans
Daily traffic
2,720
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 149 over North Fork English River is a prestressed concrete stringer/multi-beam or girder carrying Ia 149 over North Fork English River in Iowa 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 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 2,720 vehicles a day, roughly 8% of them trucks, projected to reach 2,720 by 2042. The structure is 281 ft (85.6 m) long and 43 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesIa 149
CrossesNorth Fork English River
Location0.8 Mi. S of SR V66
RouteState Highway 149
StateIowa
Coordinates41.57095, -92.06534
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating58.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length281 ft (85.6 m)
Longest span97 ft (29.6 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,720 (2022)
Projected traffic2,720 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 149 over North Fork English River built?

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

What condition is Ia 149 over North Fork English River 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 May 2023.

How much traffic does Ia 149 over North Fork English River carry?

About 2,720 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Ia 149 over North Fork English River?

The structure is 281 ft (85.6 m) long with a longest span of 97 ft (29.6 m) and a deck 43 ft wide.

Who owns Ia 149 over North Fork English River?

It is owned by the State Highway Agency.