US Bridges

US 421 Escape Ramp over Tiber Creek

Fair

Trimble County, Kentucky · 300 Ft E of US 421 · Structure no. 112B00030N

Built
1989
36 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
5,533
2019 count
Owner
State
State Highway Agency

About this bridge

US 421 Escape Ramp over Tiber Creek is a concrete culvert carrying US 421 Escape Ramp over Tiber Creek in Trimble County, Kentucky. It was built in 1989, so it is 36 years old, younger than the Kentucky average of 46.6 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 5,533 vehicles a day, roughly 9% of them trucks, projected to reach 5,533 by 2039. The structure is 21 ft (6.5 m) long and 81 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesUS 421 Escape Ramp
CrossesTiber Creek
Location300 Ft E of US 421
RouteU.S. Route 421
CountyTrimble County
StateKentucky
Coordinates38.72278, -85.36889
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length21 ft (6.5 m)
Longest span10 ft (3.1 m)
Deck width81 ft (24.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,533 (2019)
Projected traffic5,533 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 US 421 Escape Ramp over Tiber Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is US 421 Escape Ramp over Tiber 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 October 2023.

How much traffic does US 421 Escape Ramp over Tiber Creek carry?

About 5,533 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is US 421 Escape Ramp over Tiber Creek?

The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3.1 m) and a deck 81 ft wide.

Who owns US 421 Escape Ramp over Tiber Creek?

It is owned by the State Highway Agency.