US Bridges

Ia 187 over Lamont Creek

Fair

Buchanan County, Iowa · 0.2 Mi. N of N JCT SR C64 · Structure no. 000000000016041

Built
1977
48 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
124 ft
3 main spans
Daily traffic
2,250
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 187 over Lamont Creek is a concrete continuous slab carrying Ia 187 over Lamont Creek in Buchanan County, Iowa. It was built in 1977, so it is 48 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 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 2,250 vehicles a day, roughly 14% of them trucks, projected to reach 2,250 by 2044. The structure is 124 ft (37.8 m) long and 39 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIa 187
CrossesLamont Creek
Location0.2 Mi. N of N JCT SR C64
RouteState Highway 187
CountyBuchanan County
StateIowa
Coordinates42.60242, -91.64756
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.9 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span47 ft (14.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,250 (2022)
Projected traffic2,250 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 187 over Lamont Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Ia 187 over Lamont 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 February 2024.

How much traffic does Ia 187 over Lamont Creek carry?

About 2,250 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Ia 187 over Lamont Creek?

The structure is 124 ft (37.8 m) long with a longest span of 47 ft (14.3 m) and a deck 39 ft wide.

Who owns Ia 187 over Lamont Creek?

It is owned by the State Highway Agency.