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Edition: FARS 2024, annual fileNHTSA released it on Release dates

Interstate 99 fatal crashes in Pennsylvania

FARS records 25 fatal crashes with 28 deaths on Interstate 99 in Pennsylvania from 2015 to 2024.

In 2024 it records 3 fatal crashes with 3 deaths on the route.

By fatal crashes from 2015 to 2024, Interstate 99 was number 67 of the 94 routes of Pennsylvania with a page.

Fatal crashes on Interstate 99 rose by 19.0% between the ten years 2005 to 2014 (21) and the ten years 2015 to 2024 (25).

In Pennsylvania they fell by 14.0% between the same years.

From 2015 to 2024, a speeding-related driver was recorded in 36.0% of fatal crashes on Interstate 99 and 40.2% in Pennsylvania.

To qualify as a FARS case, the crash had to involve a motor vehicle traveling on a trafficway customarily open to the public and must have resulted in the death of a motorist or a non-motorist within 30 days of the crash.

The set of first files, known as the Annual Report File (ARF), is released following the crash year. The ARF is replaced about a year later with a final file, which contains additional cases or updates to cases that had become available after the ARF was released.

NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on .

This page rests on the FARS 2024 annual file. NHTSA released it on . NHTSA can revise the counts in the final file. Release dates

Figure 1.Fatal crashes on Interstate 99 in Pennsylvania by year, 2015 to 2024

Table 1 has the numbers. Go to the table

Since the last update: no figure of this route has a change on record.

Fatal crashes by year

Table 1.Interstate 99 in Pennsylvania: fatal crashes and deaths by year, 2000 to 2024
YearFatal crashesDeaths
202433
202333
20221 or 21 or 2
202100
202044
201900
201868
20171 or 21 or 2
20161 or 23
201533
201433
20131 or 21 or 2
201278
20111 or 21 or 2
201000
200945
20081 or 21 or 2
200700
200600
20051 or 21 or 2
200400
200300
20021 or 21 or 2
20011 or 21 or 2
20001 or 21 or 2

Note: the route is the trafficway that FARS records for the crash. The records of routes start in 2000. A count of 1 or 2 is written "1 or 2".

Counties on the route

Table 2.Interstate 99: fatal crashes on the route in each county, 2015 to 2024, in name order
CountyOn the routeOn all roads of the county
Bedford County1 or 281
Blair County16113
Centre County7122

Note: the table has the counties where FARS records a fatal crash on the route in these years.

Factors that NHTSA records

Table 3.Interstate 99 in Pennsylvania: counts by recorded factor, 2015 to 2024
FactorCountCounted amongShareShare on all roads of Pennsylvania
A driver recorded as drinkingof 25 fatal crashes625 fatal crashes25.4%
A speeding-related driverof 25 fatal crashes925 fatal crashes40.2%
Pedestriansof 28 deaths428 deaths14.3%
Motorcyclistsof 28 deaths428 deaths17.3%

Note: FARS records a driver as drinking when police reported alcohol involvement or a test of the driver was positive for alcohol. It is not NHTSA's alcohol-impaired measure. One crash can be in two rows. NHTSA's definitions

Note that alcohol data is often missing. For that reason, this data element may under-count the actual number of drinking drivers.

NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on .

Time of day

Table 4.Interstate 99 in Pennsylvania: fatal crashes by time of day, 2015 to 2024
Time of dayFatal crashesShareShare on all roads of Pennsylvania
Midnight to 6 a.m.520.0%18.0%
6 a.m. to noon624.0%19.5%
Noon to 6 p.m.624.0%32.3%
6 p.m. to midnight832.0%30.2%

Note: the table has the fatal crashes with a known hour.

Mile ranges

Table 5.Interstate 99 in Pennsylvania: fatal crashes by range of five miles, 2015 to 2024
MilepointFatal crashes
Mile 0 to 51 or 2
Mile 5 to 104
Mile 15 to 201 or 2
Mile 20 to 253
Mile 25 to 303
Mile 40 to 451 or 2

Note: the table has the six ranges of five miles with the largest counts, in the order of the milepoint. 100 percent of the fatal crashes on the route have a milepoint in FARS. A state can start its milepoints again at a county line.

Routes in the same counties

These routes of Pennsylvania have a fatal crash on record in one or more of the same counties. The list is for navigation. The number is the fatal crashes on the route from 2015 to 2024.

All routes in Pennsylvania

Official channels

These links go to the sites of the agencies. They were checked on .

Cite this page

Fatal Roads. Interstate 99 fatal crashes in Pennsylvania. https://fatalroads.com/route/pa/i-99/. Source: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, FARS 2024 annual file. Data to .

The address of this page does not change.

Source of the figures

Counts: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, national files of 2000 to 2024. A route page is built for a signed Interstate, US or state route with 20 or more fatal crashes in a state in ten years. Data to . The figures are totals. No page of this site is about one crash or one person.

How the figures are made. Data sources and licences. Corrections.

Questions

How many fatal crashes did FARS record on Interstate 99 in the ten years before 2015?

FARS records 21 fatal crashes on Interstate 99 in Pennsylvania from 2005 to 2014. It records 25 from 2015 to 2024.

What part of the fatal crashes in Pennsylvania was on Interstate 99?

25 of the 10,864 fatal crashes in Pennsylvania from 2015 to 2024 were on Interstate 99. That is 0.2 percent.

How many fatal crashes on Interstate 99 had a driver recorded as drinking?

FARS records a driver as drinking in 6 of 25 fatal crashes from 2015 to 2024. It records a speeding-related driver in 9 of them.

Does this page count the same route number in a different state?

No. This page counts the fatal crashes that FARS records on Interstate 99 in Pennsylvania only. The route in a different state has its own page.