diff --git a/src/bridge/AbsBridge.sol b/src/bridge/AbsBridge.sol
index bafd56f9..24a709dd 100644
--- a/src/bridge/AbsBridge.sol
+++ b/src/bridge/AbsBridge.sol
@@ -14,7 +14,9 @@ import {
     NotSequencerInbox,
     NotOutbox,
     InvalidOutboxSet,
-    BadSequencerMessageNumber
+    BadSequencerMessageNumber,
+    Paused,
+    Unpaused
 } from "../libraries/Error.sol";
 import "./IBridge.sol";
 import "./Messages.sol";
@@ -57,6 +59,8 @@ abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
 
     address internal constant EMPTY_ACTIVEOUTBOX = address(type(uint160).max);
 
+    bool internal _paused;
+
     modifier onlyRollupOrOwner() {
         if (msg.sender != address(rollup)) {
             address rollupOwner = rollup.owner();
@@ -66,6 +70,18 @@ abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
         }
         _;
     }
+    modifier whenNotPaused() {
+        if (paused()) {
+            revert Paused();
+        }
+        _;
+    }
+    modifier whenPaused() {
+        if (!paused()) {
+            revert Unpaused();
+        }
+        _;
+    }
 
     /// @notice Allows the rollup owner to set another rollup address
     function updateRollupAddress(IOwnable _rollup) external onlyRollupOrOwner {
@@ -105,6 +121,7 @@ abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
     )
         external
         onlySequencerInbox
+        whenNotPaused
         returns (
             uint256 seqMessageIndex,
             bytes32 beforeAcc,
@@ -135,6 +152,7 @@ abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
     function submitBatchSpendingReport(address sender, bytes32 messageDataHash)
         external
         onlySequencerInbox
+        whenNotPaused
         returns (uint256)
     {
         return
@@ -211,7 +229,7 @@ abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
         address to,
         uint256 value,
         bytes calldata data
-    ) external returns (bool success, bytes memory returnData) {
+    ) external whenNotPaused returns (bool success, bytes memory returnData) {
         if (!allowedOutboxes(msg.sender)) revert NotOutbox(msg.sender);
         if (data.length > 0 && !to.isContract()) revert NotContract(to);
         address prevOutbox = _activeOutbox;
@@ -283,9 +301,6 @@ abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
         return sequencerInboxAccs.length;
     }
 
-    /// @dev For the classic -> nitro migration. TODO: remove post-migration.
-    function acceptFundsFromOldBridge() external payable {}
-
     /// @dev transfer funds provided to pay for crosschain msg
     function _transferFunds(uint256 amount) internal virtual;
 
@@ -299,10 +314,24 @@ abstract contract AbsBridge is Initializable, DelegateCallAware, IBridge {
     /// used in ArbOs to calculate the submission fee for retryable ticket
     function _baseFeeToReport() internal view virtual returns (uint256);
 
+    function pause() external onlyRollupOrOwner whenNotPaused {
+        _paused = true;
+        emit BridgePaused(msg.sender);
+    }
+
+    function unpause() external onlyRollupOrOwner whenPaused {
+        _paused = false;
+        emit BridgeUnpaused(msg.sender);
+    }
+
+    function paused() public view returns (bool) {
+        return _paused;
+    }
+
     /**
      * @dev This empty reserved space is put in place to allow future versions to add new
      * variables without shifting down storage in the inheritance chain.
      * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
      */
-    uint256[40] private __gap;
+    uint256[39] private __gap;
 }
diff --git a/src/bridge/IBridge.sol b/src/bridge/IBridge.sol
index 22388b4b..0f3012d7 100644
--- a/src/bridge/IBridge.sol
+++ b/src/bridge/IBridge.sol
@@ -34,6 +34,10 @@ interface IBridge {
 
     event RollupUpdated(address rollup);
 
+    event BridgePaused(address account);
+
+    event BridgeUnpaused(address account);
+
     function allowedDelayedInboxList(uint256) external returns (address);
 
     function allowedOutboxList(uint256) external returns (address);
@@ -101,4 +105,8 @@ interface IBridge {
     function setOutbox(address inbox, bool enabled) external;
 
     function updateRollupAddress(IOwnable _rollup) external;
+
+    function pause() external;
+
+    function unpause() external;
 }
diff --git a/src/libraries/Error.sol b/src/libraries/Error.sol
index fd6f3255..8f8b1365 100644
--- a/src/libraries/Error.sol
+++ b/src/libraries/Error.sol
@@ -86,6 +86,9 @@ error AlreadyUnpaused();
 /// @dev The contract is paused
 error Paused();
 
+/// @dev The contract is unpaused
+error Unpaused();
+
 /// @dev msg.value sent to the inbox isn't high enough
 error InsufficientValue(uint256 expected, uint256 actual);
 
diff --git a/src/mocks/BridgeStub.sol b/src/mocks/BridgeStub.sol
index 2e2dee05..e9dedab8 100644
--- a/src/mocks/BridgeStub.sol
+++ b/src/mocks/BridgeStub.sol
@@ -179,9 +179,11 @@ contract BridgeStub is IBridge, IEthBridge {
         revert("NOT_IMPLEMENTED");
     }
 
-    function acceptFundsFromOldBridge() external payable {}
-
     function initialize(IOwnable) external pure {
         revert("NOT_IMPLEMENTED");
     }
+
+    function pause() external {}
+
+    function unpause() external {}
 }
diff --git a/src/test-helpers/BridgeTester.sol b/src/test-helpers/BridgeTester.sol
index 0bcbe00f..ec7c4657 100644
--- a/src/test-helpers/BridgeTester.sol
+++ b/src/test-helpers/BridgeTester.sol
@@ -240,5 +240,7 @@ contract BridgeTester is Initializable, DelegateCallAware, IBridge, IEthBridge {
 
     receive() external payable {}
 
-    function acceptFundsFromOldBridge() external payable {}
+    function pause() external {}
+
+    function unpause() external {}
 }
diff --git a/test/storage/Bridge b/test/storage/Bridge
index 9ed7f48a..aa4a98d6 100644
--- a/test/storage/Bridge
+++ b/test/storage/Bridge
@@ -12,4 +12,5 @@
 | rollup                           | contract IOwnable                              | 8    | 0      | 20    | src/bridge/Bridge.sol:Bridge |
 | sequencerInbox                   | address                                        | 9    | 0      | 20    | src/bridge/Bridge.sol:Bridge |
 | sequencerReportedSubMessageCount | uint256                                        | 10   | 0      | 32    | src/bridge/Bridge.sol:Bridge |
-| __gap                            | uint256[40]                                    | 11   | 0      | 1280  | src/bridge/Bridge.sol:Bridge |
+| _paused                          | bool                                           | 11   | 0      | 1     | src/bridge/Bridge.sol:Bridge |
+| __gap                            | uint256[39]                                    | 12   | 0      | 1248  | src/bridge/Bridge.sol:Bridge |
diff --git a/test/storage/ERC20Bridge b/test/storage/ERC20Bridge
index 1b0d838b..d9444f70 100644
--- a/test/storage/ERC20Bridge
+++ b/test/storage/ERC20Bridge
@@ -12,5 +12,6 @@
 | rollup                           | contract IOwnable                              | 8    | 0      | 20    | src/bridge/ERC20Bridge.sol:ERC20Bridge |
 | sequencerInbox                   | address                                        | 9    | 0      | 20    | src/bridge/ERC20Bridge.sol:ERC20Bridge |
 | sequencerReportedSubMessageCount | uint256                                        | 10   | 0      | 32    | src/bridge/ERC20Bridge.sol:ERC20Bridge |
-| __gap                            | uint256[40]                                    | 11   | 0      | 1280  | src/bridge/ERC20Bridge.sol:ERC20Bridge |
+| _paused                          | bool                                           | 11   | 0      | 1     | src/bridge/ERC20Bridge.sol:ERC20Bridge |
+| __gap                            | uint256[39]                                    | 12   | 0      | 1248  | src/bridge/ERC20Bridge.sol:ERC20Bridge |
 | nativeToken                      | address                                        | 51   | 0      | 20    | src/bridge/ERC20Bridge.sol:ERC20Bridge |