New Haven County, CT

891 public highway bridges

New Haven County Bridge Snapshot

New Haven County, Connecticut contains 891 public highway bridges in the FHWA National Bridge Inventory. Roughly 25.7% are rated “Good,” 45.2% “Fair,” 2.6% “Poor,” and 2.6% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CT are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

891

Total Bridges

25.7%

Good

2.6%

Poor

2.6%

Structurally Deficient

Condition Distribution

Good

25.7% (229)

Fair

45.2% (403)

Poor

2.6% (23)

SD

2.6% (23)

All Bridges (891)

Sort:

INTERSTATE-91 SB

Over: US ROUTE 1

0.1 MI N OF I-95, New Haven, CT

Built 2014 ADT: 9,800

INTERSTATE 91 NB

Over: US1(WATER ST) & I-95 RMP

0.1 MI N OF I-95, New Haven, CT

Built 1965 ADT: 2,000

I-91 TR 802

Over: US ROUTE 1(WATER STREET)

EXIT 1 RAMP FROM 91 SB, New Haven, CT

Built 2015 ADT: 9,800

INTERSTATE-91 SB

Over: INTERSTATE-95 RAMP 317

0.3 MI N OF I-95, New Haven, CT

Built 2013 ADT: 4,200

INTERSTATE-91

Over: I-91 RAMP 002

0.5 MI N OF I-95, New Haven, CT

Built 1965 ADT: 3,500

NORTH WALL STREET

Over: INTERSTATE-691

0.4 MILE WEST OF ROUTE 15, New Haven, CT

Built 1965 ADT: 82,400

PRESTON AVENUE

Over: ROUTE 66

0.6MI W JCT I-691 &RTE 66, New Haven, CT

Built 1965 ADT: 24,600

I-91 RAMP 132

Over: I-91 RAMP 135 & AMTRAK

RMP TRUMBULL ST TO I91 SB, New Haven, CT

Built 1965 ADT: 5,300

INTERSTATE-91

Over: I-91 RAMPS & AMTRAK

0.8 MI N OF I-95, New Haven, CT

Built 1965 ADT: 17,800

INTERSTATE-91

Over: ROUTE 17

EXIT 8 ROUTE 91, New Haven, CT

Built 1965 ADT: 30,000

INTERSTATE-91 NB

Over: SR 715 (MONTOWESE AVE.)

EXIT 9 ON I-91, New Haven, CT

Built 1965 ADT: 20,800

INTERSTATE-91 SB

Over: SR 715 (MONTOWESE AVE)

I-91 SB OVER SR 715, New Haven, CT

Built 1965 ADT: 20,800

INTERSTATE-91 NB

Over: SR 729

0.8 MI N OF ROUTE 40, New Haven, CT

Built 1965 ADT: 8,200

INTERSTATE-91 SB

Over: SR 729

0.8 MI N OF ROUTE 40, New Haven, CT

Built 1965 ADT: 8,200

INTERSTATE-91 NB

Over: US ROUTE 5

I-91 EXIT NO. 12, New Haven, CT

Built 1965 ADT: 18,800

INTERSTATE-91 SB

Over: US ROUTE 5

I-91 EXIT NO. 12, New Haven, CT

Built 1965 ADT: 18,800

BASSETT ROAD

Over: INTERSTATE-91

700' NORTH OF WILSON AVE., New Haven, CT

Built 2017 ADT: 72,800

INTERSTATE-91 SB

Over: I-91 TR 807

ROUTE 91 EXIT NO. 13, New Haven, CT

Built 1965 ADT: 3,000

SR 702

Over: INTERSTATE-91 SOUTHBOUND

0.5 MI S OF EXIT 91 SB, New Haven, CT

Built 1965 ADT: 32,300

INTERSTATE-91 NB

Over: INTERSTATE-91 TR 807

1 MI SOUTH OF ROUTE 150, New Haven, CT

Built 1965 ADT: 3,000

HARRISON ROAD

Over: INTERSTATE-91

.50 MI SOUTH OF ROUTE 150, New Haven, CT

Built 1965 ADT: 75,600

INTERSTATE-91 NB

Over: ROUTE 150

I-91 EXIT NO. 14, New Haven, CT

Built 1965 ADT: 7,300

INTERSTATE-91 SB

Over: ROUTE 150

I-91 EXIT NO. 14, New Haven, CT

Built 1965 ADT: 7,300

SR 738 (E. CENTER

Over: INTERSTATE-91

.76 MI SO OF RTE 68, New Haven, CT

Built 1965 ADT: 69,400

NEW ROCK HILL ROAD

Over: INTERSTATE-91

1.77 SOUTH OF ROUTE 68, New Haven, CT

Built 1965 ADT: 74,600

DURHAM ROAD

Over: INTERSTATE-91

betwn exits 14 & 15, I-91, New Haven, CT

Built 1965 ADT: 37,200

ROUTE 68

Over: INTERSTATE-91

1.0 MI NORTH OF DURHAM RD, New Haven, CT

Built 2004 ADT: 67,700

CARPENTER LANE

Over: INTERSTATE-91

.54 MI NORTH OF RTE 68, New Haven, CT

Built 1965 ADT: 72,500

MURDOCK AVENUE

Over: INTERSTATE-91

.74 MI SO OF RT 15 NB EXT, New Haven, CT

Built 1965 ADT: 72,500

ROUTE 8

Over: SR 847 - SOUTH MAIN ST.

0.1 MILE NORTH OF EXIT 29, New Haven, CT

Built 1965 ADT: 6,200

SEVENTH STREET

Over: ROUTE 8

1.5 MI N NAUGTK/WATBRY TL, New Haven, CT

Built 1965 ADT: 52,700

ROUTE 8 NORTHBOUND

Over: ROUTE 8 SB & LOCAL ROADS

ROUTE 8 SOUTH OF I-84, New Haven, CT

Built 1966 ADT: 28,600

I-84 TR 811

Over: I-84 TR 812 & NAUGATUCK

NB RTE 8 TO EB 84 EXIT 31, New Haven, CT

Built 1966 ADT: 11,700

I-84 TR 808

Over: ROUTE 8 SB & RAMP 129

EXIT 33 ROUTE 8 NB, New Haven, CT

Built 1966 ADT: 3,000

INTERSTATE-84 EB

Over: I-84WB,RTE8,NAUGATUCK RV

I-84 EXIT 20, New Haven, CT

Built 1967 ADT: 2,600

INTERSTATE 84 WB

Over: RTE 8, NAUG RIV, M-N RR

WATERBURY LOWER LEVEL, New Haven, CT

Built 1967 ADT: 3,000

I-84 RAMP 169

Over: I-84 TR 805 & 808

EB RAMP FROM HIGHLAND AVE, New Haven, CT

Built 1966 ADT: 4,200

I-84 TR 809

Over: ROUTE 8 NB,RIVERSIDE ST

SB RTE 8 EXIT 31TO EB I84, New Haven, CT

Built 1966 ADT: 2,600

I-84 TR 810

Over: ROUTE 8 NB & RAMP 128

ROUTE 84 WB EXIT 20, New Haven, CT

Built 1967 ADT: 2,600

I-84 RAMP 197

Over: RAMP 202 MEADOW STREET

EXIT 21 I-84 EB RAMP, New Haven, CT

Built 1967 ADT: 3,800

I-84 RAMP 200

Over: I-84 RAMPS 199&202, BANK

EXIT 22 EB RT 84, New Haven, CT

Built 1966 ADT: 3,800

INTERSTATE 84 WB

Over: BANK STREET & RAMP 199

.2 MILES WEST OF SR 847, New Haven, CT

Built 1965 ADT: 1,900

I-84 RAMP 201

Over: I-84 RAMP 198 & BANK ST

EXIT 21, 84 WB OFF RAMP, New Haven, CT

Built 1965 ADT: 4,600

INTERSTATE 84

Over: SR 847 (SOUTH MAIN ST.)

0.1 MILE EAST OF EXIT 21, New Haven, CT

Built 1965 ADT: 10,800

SOUTH ELM STREET

Over: I-84 & MCMAHON STREET

1.1 MI W OF ROUTE 69, New Haven, CT

Built 1965 ADT: 114,900

I-84 TR 806

Over: I84 TR 808,809,RIVERSIDE

RAMP FROM 84 EB TO 8 NB, New Haven, CT

Built 1965 ADT: 10,900

PEDESTRIAN WALK

Over: ROUTE 8 SOUTHBOUND

WATERBURY INTERCHANGE, New Haven, CT

Built 1965 ADT: 1,800

RT 64 EB/I-84 RAMP

Over: INTERSTATE 84

.4 MI EAST OF RTE 63, New Haven, CT

Built 1965 ADT: 62,600

HIGHLAND AVENUE

Over: INTERSTATE 84

0.2 MI W OF ROUTE 8, New Haven, CT

Built 1966 ADT: 89,700

I-84 EB TR 806

Over: INTERSTATE 84 WB

I-84 E/B EXIT 20, New Haven, CT

Built 1965 ADT: 4,200

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026